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CATitle_practiceSE_2.indd Page 1 8/11/09 2:14:17 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/FM/CATitle_practiceSE_2 PRACTICE Grade 2 Visit The Learning Site! www.harcourtschool.com CALIFORNIA HSP Workbook CAcopyright_practiceSE_Gr2.indd Page 1 7/30/09 11:12:02 PM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/FM/CAcopyright_practiceSE_Gr2 Copyright © by Harcourt, Inc. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Permission is hereby granted to individuals using the corresponding student’s textbook or kit as the major vehicle for regular classroom instruction to photocopy entire pages from this publication in classroom quantities for instructional use and not for resale. 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Possession of this publication in print format does not entitle users to convert this publication, or any portion of it, into electronic format. 1 2 3 4 5 6 7 8 9 10 073 16 15 14 13 12 11 10 09 08 07 UNIT 1: NUMBERS AND OPERATIONS Chapter 1: Addition Facts and Strategies 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 Understand Addition ................. PW1 Count On ................................. PW2 Doubles and Doubles Plus One .. PW3 Make a Ten .............................. PW4 Algebra: Practice the Facts........ PW5 Algebra: Follow the Rule ............ PW6 Algebra: Add Three Numbers ..... PW7 Problem Solving Workshop Strategy: Draw a Picture ........... PW8 Chapter 2: Subtraction Facts and Strategies 2.1 2.2 2.3 2.4 2.5 2.6 Understand Subtraction ............ PW9 Count Back ............................ PW10 Algebra: Fact Families ............. PW11 Algebra: Think Addition to Subtract ................................ PW12 Algebra: Missing Addends ....... PW13 Problem Solving Workshop Skill: Choose the Operation ..... PW14 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/FM/MXECA09AWK2X_PH_SEFM Chapter 4: Number Concepts and Patterns 4.1 4.2 4.3 4.4 4.5 4.6 4.7 UNIT 2: 2-DIGIT ADDITION AND SUBTRACTION Chapter 5: Explore 2-Digit Addition 5.1 5.2 5.3 5.4 5.5 Chapter 3: Place Value to 100 3.1 3.2 3.3 3.4 3.5 © Harcourt 3.6 3.7 Tens ...................................... PW15 Tens and Ones ....................... PW16 Understand Place Value .......... PW17 Expanded Form ..................... PW18 Read and Write Numbers to 100 ................................... PW19 Different Ways to Show Numbers ............................... PW20 Problem Solving Workshop Skill: Make Reasonable Estimates .............................. PW21 Algebra: Compare Numbers: >, <, or = ............................... PW22 Algebra: Order Numbers ......... PW23 Even and Odd Numbers .......... PW24 Algebra: Patterns on a Hundred Chart ....................... PW25 Algebra: Skip-Count on a Number Line .......................... PW26 Problem Solving Workshop Strategy: Find a Pattern .......... PW27 Algebra: Number Patterns ....... PW28 5.6 Mental Math: Add On Multiples of Ten ...................... PW29 Regrouping for Addition........... PW30 Model 2-Digit Addition ............. PW31 Problem Solving Workshop Strategy: Make a Model .......... PW32 Model and Record 2-Digit Addition ................................. PW33 2-Digit Addition ....................... PW34 Chapter 6: 2-Digit Addition 6.1 6.2 6.3 6.4 6.5 6.6 6.7 Add 2-Digit Numbers ............... PW35 Practice 2-Digit Addition .......... PW36 Rewrite 2-Digit Addition ........... PW37 Estimate Sums ....................... PW38 More 2-Digit Addition............... PW39 Problem Solving Workshop Skill: Use a Table .................... PW40 Algebra: Break Apart Numbers to Add ..................... PW41 © Harcourt MXECA09AWK2X_PH_SEFM.indd Page 2 7/30/09 11:13:38 PM s-124 Chapter 7: Explore 2-Digit Subtraction 7.1 7.2 7.3 7.4 7.5 7.6 Mental Math: Subtract Multiples of 10 ....................... PW42 Regrouping for Subtraction...... PW43 Model 2-Digit Subtraction ........ PW44 Problem Solving Workshop Strategy: Make a Model .......... PW45 Model and Record 2-Digit Subtraction ............................ PW46 Subtract 2-Digit Numbers ........ PW47 Chapter 8: 2-Digit Subtraction 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 2-Digit Subtraction .................. PW48 Practice 2-Digit Subtraction ..... PW49 Rewrite 2-Digit Subtraction ...... PW50 More 2-Digit Subtraction.......... PW51 Use Addition to Check Subtraction ............................ PW52 Estimate Differences .............. PW53 Problem Solving Workshop Skill: Use a Table .................... PW54 Mental Math: Find Differences . PW55 Mixed Practice ....................... PW56 UNIT 3: DATA, GRAPHS, AND MONEY Chapter 9: Data and Graphs © Harcourt 9.1 9.2 9.3 9.4 9.5 9.6 9.7 Picture Graphs ....................... PW57 Take a Survey on a Tally Chart .. PW58 Read a Bar Graph .................. PW59 Make a Bar Graph .................. PW60 Problem Solving Workshop Strategy: Make a Bar Graph .... PW61 Pictographs ........................... PW62 Range and Mode.................... PW63 Chapter 10: Count Money 10.1 10.2 10.3 10.4 Dimes, Nickels, and Pennies .... PW64 Half Dollars and Quarters ........ PW65 Count Collections ................... PW66 Make the Same Amounts ........ PW67 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/FM/MXECA09AWK2X_PH_SEFM 10.5 Problem Solving Workshop Strategy: Make a List .............. PW68 Chapter 11: Use Money 11.1 Algebra: Compare Amounts .... PW69 11.2 Problem Solving Workshop Strategy: Act It Out ................ PW70 11.3 Add and Subtract Money ......... PW71 11.4 Problem Solving Workshop Strategy: Predict and Test ....... PW72 11.5 One Dollar ............................. PW73 11.6 Make Change to $1.00 ........... PW74 UNIT 4: GEOMETRY AND FRACTIONS Chapter 12: Solid Figures 12.1 12.2 12.3 12.4 Identify Solid Figures .............. PW75 Algebra: Sort Solid Figures ...... PW76 Attributes of Solid Figures ....... PW77 Make Plane Figures from Solid Figures .......................... PW78 12.5 Problem Solving Workshop Strategy: Make a Table ............ PW79 Chapter 13: Plane Figures and Spatial Sense 13.1 13.2 13.3 13.4 13.5 Identify Plane Figures ............. PW80 Algebra: Sort Plane Figures ..... PW81 Combine Plane Figures ........... PW82 Separate Plane Figures .......... .PW83 Problem Solving Workshop Strategy: Use Logical Reasoning ............................. PW84 13.6 Congruent Figures .................. PW85 Chapter 14: Parts of a Whole 14.1 14.2 14.3 14.4 Equal Parts ........................... PW86 Unit Fractions ....................... PW87 Compare Unit Fractions ........ .PW88 Problem Solving Workshop Strategy: Make a Model .......... PW89 © Harcourt MXECA09AWK2X_PH_SEFM.indd Page 3 7/30/09 11:13:39 PM s-124 14.5 Other Fractions ...................... PW90 14.6 Fractions Equal to 1 ................ PW91 14.7 Fractions Greater Than 1 ........ PW92 Chapter 15: Parts of a Group 15.1 15.2 15.3 15.4 Equal Parts of a Group ............ PW93 Unit Fractions of a Group ........ PW94 Other Fractions of a Group ...... PW95 Problem Solving Workshop Strategy: Make a Model .......... PW96 UNIT 5: GREATER NUMBERS AND 3-DIGIT ADDITION AND SUBTRACTION Chapter 16: Place Value to 1,000 16.1 16.2 16.3 16.4 16.5 16.6 16.7 16.8 Hundreds .............................. PW97 Hundreds, Tens, and Ones ...... PW98 Understand Place Value .......... PW99 Read and Write 3-Digit Numbers ............................. PW100 Different Ways to Show Numbers ............................. PW101 Problem Solving Workshop Skill: Make Reasonable Estimates ............................ PW102 Count Bills and Coins ............ PW103 Problem Solving Workshop Strategy: Make a Model ........ PW104 © Harcourt Chapter 17: Compare and Order Greater Numbers 17.1 Algebra: Compare Numbers: >, <, or = ............................. PW105 17.2 Use Place Value to Compare Numbers ............................. PW106 17.3 Compare Money Amounts ..... PW107 17.4 Algebra: Order Numbers ....... PW108 17.5 Problem Solving Workshop Skill: Use a Table .................. PW109 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/FM/MXECA09AWK2X_PH_SEFM Chapter 18: 3-Digit Addition 18.1 Mental Math: Add On Multiples of 100.................... PW110 18.2 Model 3-Digit Addition: Regroup Ones ..................... PW111 18.3 Model 3-Digit Addition: Regroup Tens ....................... PW112 18.4 Practice 3-Digit Addition ........ PW113 18.5 Estimate Sums ..................... PW114 18.6 Problem Solving Workshop Skill: Too Much Information ... PW115 Chapter 19: 3-Digit Subtraction 19.1 Mental Math: Subtract Multiples of 100 ...... PW116 19.2 Model 3-Digit Subtraction: Regroup Tens ....................... PW117 19.3 Model 3-Digit Subtraction: Regroup Hundreds ............... PW118 19.4 Practice 3-Digit Subtraction ... PW119 19.5 Add and Subtract Money ....... PW120 19.6 Problem Solving Workshop Skill: Solve Multistep Problems ....... PW121 19.7 Estimate Differences ............ PW122 UNIT 6: MULTIPLICATION, DIVISION, MEASUREMENT, AND TIME Chapter 20: Multiplication Concepts and Facts 20.1 Skip-Count to Multiply ........... PW123 20.2 Connect Addition to Multiplication........................ PW124 20.3 Algebra: Model with Arrays ... PW125 20.4 Algebra: Multiply in Any Order PW126 20.5 Problem Solving Workshop Strategy: Write a Number Sentence ............................. PW127 20.6 Multiply with 2 ...................... PW128 20.7 Multiply with 5 ...................... PW129 © Harcourt MXECA09AWK2X_PH_SEFM.indd Page 4 7/30/09 11:13:40 PM s-124 20.8 Multiply with 10 .................... PW130 20.9 Use a Multiplication Table ...... PW131 Chapter 21: Division Concepts 21.1 Sizes of Shares .................... PW132 21.2 Number of Equal Shares ....... PW133 21.3 Equal Shares with Remainders ......................... PW134 21.4 Connect Subtraction to Division ............................... PW135 21.5 Problem Solving Workshop Strategy: Write a Number Sentence ............................. PW136 Chapter 22: Length 22.1 Measure Length with Nonstandard Units .................................. PW137 22.2 Compare Nonstandard Units .. PW138 22.3 Measure to the Nearest Inch .. PW139 22.4 Problem Solving Workshop Skill: Make Reasonable Estimates ............................ PW140 22.5 Measure in Inches and Feet .. PW141 22.6 Measure to the Nearest Centimeter........................... PW142 © Harcourt Chapter 23: Weight, Mass, and Capacity 23.1 Ounces and Pounds ............. PW143 23.2 Grams and Kilograms ........... PW144 23.3 Cups, Pints, Quarts, and Gallons.......................... PW145 23.4 Liters ................................... PW146 23.5 Problem Solving Workshop Skill: Make Reasonable Estimates ............................ PW147 Chapter 24: Time 24.1 24.2 24.3 24.4 24.5 Explore 1 Minute .................. PW148 Time to 15 Minutes ............... PW149 Time to 5 Minutes ................. PW150 Time Before the Hour ........... PW151 A.M. and P.M. ...................... PW152 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/FM/MXECA09AWK2X_PH_SEFM 24.6 Elapsed Time ....................... PW153 24.7 Problem Solving Workshop Skill: Use a Table .................. PW154 24.8 Days, Weeks, Months, and Years .................................. PW155 Spiral Review Week 1 ..............................................SR1 Week 2 ..............................................SR2 Week 3 ..............................................SR3 Week 4 ..............................................SR4 Week 5 ..............................................SR5 Week 6 ..............................................SR6 Week 7 ..............................................SR7 Week 8 ..............................................SR8 Week 9 ..............................................SR9 Week 10 ..........................................SR10 Week 11 ..........................................SR11 Week 12 ..........................................SR12 Week 13 ..........................................SR13 Week 14 ..........................................SR14 Week 15 ..........................................SR15 Week 16 ..........................................SR16 Week 17 ..........................................SR17 Week 18 ..........................................SR18 Week 19 ..........................................SR19 Week 20 ..........................................SR20 Week 21 ..........................................SR21 Week 22 ..........................................SR22 Week 23 ..........................................SR23 Week 24 ..........................................SR24 Week 25 ..........................................SR25 Week 26 ..........................................SR26 Week 27 ..........................................SR27 Week 28 ..........................................SR28 Week 29 ..........................................SR29 Week 30 ..........................................SR30 Week 31 ..........................................SR31 Week 32 ..........................................SR32 Week 33 ..........................................SR33 Week 34 ..........................................SR34 Week 35 ..........................................SR35 Week 36 ..........................................SR36 © Harcourt MXECA09AWK2X_PH_SEFM.indd Page 5 7/30/09 11:13:41 PM s-124 MXECA09AWK2X_PH_SEFM.indd Page 6 19/08/2009 16:08:34 elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/FM/MXECA09AWK2X_PH_SEFM MXECA09AWK2X_PH_SEFM.indd Page 6 19/08/2009 16:08:34 elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/FM/MXECA09AWK2X_PH_SEFM MXECA09AWK2X_PH_C01_L1.indd Page PW1 7/31/09 1:38:59 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch01/MXECA09AWK2X_PH_C01_L1 Name Lesson 1.1 Understand Addition Write the number sentence. Solve. 1. Six bees are flying. Then 6 more bees come to join them. How many bees are there now? bee C C 6 +— 6 =— 12 — bees 2. Jeff finds 8 ladybugs. Sally finds 3 ladybugs. How many — ladybugs do they find in ladybug all? C — C — ladybugs C — C — moths C — C — crickets 3. There are 4 moths on a tree. Then 5 more moths come. How many moths are on the tree now? moth — 4. There are 7 crickets Problem Solving © Harcourt © Harcourt jumping. There are 8 crickets — chirping. How many crickets cricket are there in all? 5. Write a number sentence for the ants that Carol saw. — C — C — PW1 Practice MXECA09AWK2X_PH_C01_L2.indd Page PW2 7/31/09 2:11:54 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch01/MXECA09AWK2X_PH_C01_L2 Name Lesson 1.2 Count On Circle the greater number. Count on to find the sum. 1. 2. 3. 9 + 2 _ 6 + 3 _ 4. 5 + 1 _ 5. 9 + 3 _ 3 + 4 _ 9 6. 7. 8. 2 + 5 _ 11. 6 + 1 _ 12. 1 + 10 _ 9. 5 + 3 _ 13. 4 + 2 _ 10. 14. 3 + 7 _ 1 + 7 _ 2 + 8 _ 15. 8 + 1 _ 8 + 3 _ © Harcourt 16. What are three ways you can count on to make a sum of 9? Look at an addition table if you need to. PW2 — ⫹—⫽9 — ⫹—⫽9 — ⫹—⫽9 Practice © Harcourt Problem Solving MXECA09AWK2X_PH_C01_L3.indd Page PW3 7/31/09 2:29:26 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch01/MXECA09AWK2X_PH_C01_L3 Name Lesson 1.3 Doubles and Doubles Plus One Write a double. Then write both doubles-plus-one facts. 7 8 8 7 — — 15 — — 15 7 = 14 7 +— 1. — — — 11 2. — — 10 — — 11 — — 19 3. — — 18 — — 19 ——9 4. — — 8 ——9 — — 13 5. — — 12 — — 13 — — 17 6. — — 16 — — 17 Problem Solving © Harcourt 7. Six crickets are chirping. Then 6 more crickets join them. How many crickets are chirping now? cricket 8. Nora counts 8 flies inside and 9 flies outside. How many flies does she count in all? fly — crickets PW3 — flies Practice © Harcourt Solve. Use doubles or doubles plus one. MXECA09AWK2X_PH_C01_L4.indd Page PW4 7/31/09 2:39:33 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch01/MXECA09AWK2X_PH_C01_L4 Name Lesson 1.4 Make a Ten Use a ten frame and 1. 2. 4 + 7 _ to make a ten. Find the sum. 3. 5 + 8 _ 4. 9 + 2 _ 5. 8 + 7 _ 6. 9 + 9 _ 4 + 8 _ 11 8. 8 + 9 _ 13. 9. 6 + 6 _ 14. 8 + 5 _ 10. 7 + 5 _ 15. 9 + 7 _ 11. 5 + 8 _ 16. 8 + 8 _ 17. Problem Solving © Harcourt 3 + 9 _ 7 + 6 _ 19. There are 13 children in — a room. Some are boys. The others are girls. Write addition sentences to show some ways to make 13. — — — PW4 12. 7 + 7 _ 18. 2 + 9 _ C C C C — — — — 6 + 8 _ C C C C — — — — Practice © Harcourt 7. MXECA09AWK2X_PH_C01_L5.indd Page PW5 8/1/09 1:33:30 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch01/MXECA09AWK2X_PH_C01_L5 Name Lesson 1.5 Practice the Facts Find the sums. 12 66— 13 6 7 — 2. 06— 09— 3. — 85 —86 5. 29— 92— 6. 7. 59— 95— 8. — 10. 20— 70— 11. — 1. 4. — 13. — 60 —40 03 —04 14. 74 —47 50— 10— 9. — 56 —57 88 —89 12. 69— 96— 38— 93— 15. 79— 97— Problem Solving Solve. Use doubles or doubles plus one. 17. Fred thinks of a new fact. The sum is 14. One addend is 7. What fact could Fred be thinking of? addition fact. This time, the sum is 15, but one addend is still 7. What fact could Fred be thinking of? — —— — —— — —— PW5 Practice © Harcourt © Harcourt 16. Fred thinks of an addition MXECA09AWK2X_PH_C01_L6.indd Page PW6 8/1/09 1:34:26 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch01/MXECA09AWK2X_PH_C01_L6 Name Lesson 1.6 Algebra: Follow the Rule Follow the rule. Complete the table. 1. Rule: Add 5. 2. Rule: Add 3. 3. Rule: Add 8. In Out In In 2 3 4 5 7 3 5 7 9 Out Out 2 4 6 8 Find a rule. Complete the table. 4 . 4. Rule: Add — 5. Rule: Add —. 6. Rule: Add —. In Out In Out In Out 3 5 7 9 7 9 2 3 4 5 8 9 6 7 8 9 13 14 11 Problem Solving 7. Find the missing numbers in 9 2 HINT: Which two numbers can you odd to find the sum for the center of the circle? 8 8 6 © Harcourt © Harcourt the puzzle. 10 5 5 PW6 Practice MXECA09AWK2X_PH_C01_L7.indd Page PW7 7/31/09 2:59:29 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch01/MXECA09AWK2X_PH_C01_L7 Name Lesson 1.7 Algebra: Add 3 Numbers Write the sum. 1. 2. 3. 4 6 ⫹ 3 _ 3 4 ⫹ 2 _ 4. 3 3 ⫹ 7 _ 5. 4 2 ⫹ 4 _ 6. 7 3 ⫹ 2 _ 4 2 ⫹ 5 _ 9 7. 8. 4 2 ⫹ 6 _ 9. 9 1 ⫹ 1 _ 13. 15. 5 5 ⫹ 5 _ 11. 5 1 ⫹ 5 _ 2 3 ⫹ 7 _ 14. 1 3 ⫹ 7 _ 10. 12. 16. 17. 2 3 ⫹ 6 _ 8 1 ⫹ 2 _ 4 5 ⫹ 3 _ 6 4 ⫹ 4 _ 18. 7 2 ⫹ 2 _ 5 5 ⫹ 3 _ Problem Solving Use the picture to solve. red red green green green green 19. If Ali buys all the red beads, and Kim buys all the blue and green beads, how many beads do they buy in all? — beads PW7 green green blue blue blue 20. If Kim buys all the green beads, and Ali buys 1 blue bead and 2 red beads, how many beads do they buy in all? — beads Practice © Harcourt © Harcourt red MXECA09AWK2X_PH_C01_L8.indd Page PW8 7/30/09 4:07:13 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch01/MXECA09AWK2X_PH_C01_L8 Name Lesson 1.8 Problem Solving Strategy Practice Draw a picture to solve. 1. A cricket hops 5 times. Then it hops 3 more times. How many times does it hop in all? — hops cricket 2. Six worms are digging in the dirt. Then 6 more worms come to join them. How many worms are there now? worm — worms Mixed Strategy Practice Choose a Strategy Draw a Picture Choose a strategy to solve. Make a Model 3. There are 2 ladybugs on the Write a Number Sentence bush. Each ladybug has 8 spots. How many spots are there on both the ladybugs together? ladybug — spots blue pens, and 2 green pens. How many pens does she have in all? © Harcourt © Harcourt 4. Marisol has 6 red pens, 5 pen — pens PW8 Practice MXECA09AWK2X_PH_C02_L1.indd Page PW9 8/1/09 1:43:05 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch02/MXECA09AWK2X_PH_C02_L1 Name Lesson 2.1 Understand Subtraction Write the number sentence. Solve. 1. There are 8 kites in the air. Then 3 kites fall to the ground. How many kites are still in the air? 8 C = 5 - 3 C kites KITE 2. Tammy eats 5 nuts. Jon eats 7 nuts. How many fewer nuts does Tammy eat than Jon? nut C C fewer nuts C C more birds C C 3. LaBron sees 8 birds. Bret sees 2 birds. How many more birds does LaBron see than Bret? bird 4. There are 9 towels at the pool. Bella takes 1 towel. How many towels are left? towels © Harcourt © Harcourt towel Problem Solving Use the picture to complete the sentence. 5. There are — more stars [ART: 7 stars and 3bells] than bells. PW9 Practice MXECA09AWK2X_PH_C02_L2.indd Page PW10 8/1/09 1:42:49 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch02/MXECA09AWK2X_PH_C02_L2 Name Lesson 2.2 Count Back Count back to find the difference. 1. 8 3 _ Say 8. 2. Count back 3. 7, 6, 5 5 5 2 _ 3. 7 3 _ 4. 3 1 _ 5. 6 2 _ 6. 9 1 _ 7. 12 3 _ 8. 5 1 _ 9. 8 2 _ 10. 11 3 _ 11. 7 2 _ 12. 9 3 _ 13. 10 1 _ 14. 4 3 _ 15. 3 2 _ 16. 4 2 _ 17. 11 2 _ 18. 10 3 _ 19. 6 3 _ Problem Solving Subtract. Look for a pattern. 61 5 — 21. 81 22. 91 62 82 92 63 83 93 64 84 94 PW10 © Harcourt © Harcourt 20. Practice MXECA09AWK2X_PH_C02_L3.indd Page PW11 8/1/09 1:44:18 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch02/MXECA09AWK2X_PH_C02_L3 Name Lesson 2.3 Algebra: Fact Families Complete the fact families. 1. 6 5 6 11 5 11 11 6 11 5 5 2. 17 8 6 3. 4. 13 9 7 5. 5 6. 8 3 14 6 Problem Solving 7. 8. 7 2 16 16 7 7 9 9 _ _ _ _ 16 9 7 9 8 5 13 8 5 5 5 8 _ _ _ _ 13 13 8 3 PW11 © Harcourt © Harcourt Cross out the fact that does not belong in the family. Then write the missing fact. Practice MXECA09AWK2X_PH_C02_L4.indd Page PW12 8/1/09 1:43:33 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch02/MXECA09AWK2X_PH_C02_L4 Name Lesson 2.4 Algebra: Think Addition to Subtract Find the difference. Complete the addition fact that can help. 1. 5 13 ⫺ 8 ⫽— 2. 16 ⫺ 7 ⫽ 3. 4. 11 ⫺ 9 ⫽ 12 ⫺ 4 ⫽ 13 — 16 — THINK: 8 5 ⫽ 13 ⫹— THINK: 7 ⫹ THINK: 9 ⫹ THINK: 4 ⫹ 11 — 12 ⫽ 16 — ⫽ 11 — ⫽ 12 — Problem Solving © Harcourt 5. 6. There are 11 children on the school bus. Then 3 children get off. How many children school bus are left on the bus? ⫺ ⫽ Tyrell has 14 socks. Eight of his socks are black. The rest are white. How many white socks does he have? ⫺ ⫽ PW12 sock Practice © Harcourt Write a number sentence to solve. MXECA09AWK2X_PH_C02_L5.indd Page PW13 8/1/09 1:43:24 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch02/MXECA09AWK2X_PH_C02_L5 Name Lesson 2.5 Algebra: Missing Addends Use addition and a related fact to find the missing addend. 1. 4 ? 12 2. ? 7 16 3. ? 8 13 4. 9 ? 15 5. ? 7 11 6. 9 ? 12 4 8 12 The missing 12 4 8 addend is 8 . 7 16 16 7 The missing addend is . 8 13 13 8 The missing addend is . 9 15 15 9 The missing addend is . 7 11 11 7 The missing addend is . 9 12 12 9 The missing addend is . What number does the 7. 7 15 stand for? 8. 8 11 PW13 © Harcourt © Harcourt Problem Solving 9. 6 12 Practice MXECA09AWK2X_PH_C02_L6.indd Page PW14 8/1/09 1:44:00 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch02/MXECA09AWK2X_PH_C02_L6 Name Lesson 2.6 Skill • Choose the Operation Decide which operation to use. Then write the number sentence. Solve. 1. There are 17 children in Ms. Shore’s class. Eight of them are girls. How many boys are there in the class? C 17 - — = C 8 — 9 — 9 boys boy — 2. There are 5 big dogs and 7 little dogs in the park. How many dogs are in the park in all? — C — dog — — 3. Mandy has 8 beads. Her friend gives her 6 more beads. How many beads does she have now? C — C — bead dogs C — — beads 4. Hal has 11 comic books. — © Harcourt comic book C — — C — comic books 5. Yin has 7 red pens and 10 black pens. How many more black pens than red pens does she have? pen PW14 — C — — C — more black pens Practice © Harcourt He gives 3 comic books away. How many comic books does he have left? MXECA09AWK2X_PH_C03_L1.indd Page PW15 7/30/09 4:26:49 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch03/MXECA09AWK2X_PH_C03_L1 Name Lesson 3.1 Tens Write how many ones. Then circle each group of ten. Write how many tens. 1. 50 5 — ones ⫽ — tens 2. — ones ⫽ — tens 3. — ones ⫽ — tens Problem Solving 4. Circle the two models that show the same amount. © Harcourt © Harcourt Cross out the model that shows a different amount. PW15 Practice MXECA09AWK2X_PH_C03_L2.indd Page PW16 7/31/09 11:19:37 PM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch03/MXECA09AWK2X_PH_C03_L2 Name Lesson 3.2 Hands On: Tens and Ones Use Workmat 3 and . Write how many tens and ones. Then write the number. 1. 2. 2 9 tens ones tens ones tens ones 29 3. 4. tens ones Problem Solving Ricky has 5 bags of small marbles and 3 big marbles. Each bag has 10 marbles. How many marbles does he have? — marbles marble 6. Tad has 27 cookies. How many boxes of 10 cookies can he make? — boxes How many cookies will not be in a box? — cookies cookie PW16 Practice © Harcourt © Harcourt 5. MXECA09AWK2X_PH_C03_L3.indd Page PW17 7/30/09 4:33:10 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch03/MXECA09AWK2X_PH_C03_L3 Name Lesson 3.3 Understand Place Value Circle the value of the gray digit. 1. 36 3 or 30 4. 15 52 2. 50 or 5 86 5. 1 or 10 7. 72 75 8. 18 19 8 or 80 13. 85 6. 9. 38 5 or 50 30 or 3 24 2 or 20 12. 10 or 1 14. 53 3 or 30 70 or 7 11. 60 6 or 60 80 or 8 2 or 20 10. 3. 93 9 or 90 15. 67 7 or 70 Problem Solving 17. I have 8 ones and 1 ten. What number am I? What number am I? © Harcourt © Harcourt 16. I have 4 ones and 3 tens. — PW17 — Practice MXECA09AWK2X_PH_C03_L4.indd Page PW18 7/31/09 11:34:09 PM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch03/MXECA09AWK2X_PH_C03_L4 Name Lesson 3.4 Expanded Form Write the number in three different ways. 1. 2. 7 9 70 9 —— 79 — — tens — ones 3. — tens — ones —— — 4. — tens — ones — tens — ones — — —— —— Problem Solving 5. Tyler used these blocks to model a number. 9 tens 2 ones 20 9 29 2 tens 9 ones 90 2 92 PW18 Practice © Harcourt © Harcourt Circle the correct ways to write the number. MXECA09AWK2X_PH_C03_L5.indd Page PW19 7/31/09 11:53:05 PM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch03/MXECA09AWK2X_PH_C03_L5 Name Lesson 3.5 Read and Write Numbers to 100 Write the number. 1. 50 ⫹ 4 2. seventeen 3. 3 tens 0 ones 54 5. 4. sixty-two 80 ⫹ 1 6. ninety-nine 7. 20 ⫹ 3 8. 1 ten 8 ones 10. 30 ⫹ 9 11. fourteen 12. 5 tens 7 ones 14. seventy-one 15. 60 ⫹ 5 13. thirty-one 9. eighty Problem Solving 16. I am a number with the digit 8 in the ones place. Which of these numbers could I be? eighteen eighty eighty-six PW19 17. I am a number with the digit 3 in the tens place. Which of these numbers could I be? three thirty thirteen Practice © Harcourt © Harcourt Circle the best answer for the riddle. MXECA09AWK2X_PH_C03_L6.indd Page PW20 8/1/09 12:34:46 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch03/MXECA09AWK2X_PH_C03_L6 Name Lesson 3.6 Different Ways to Show Numbers Use . Write how many tens and ones. 26 1. 16 1 — ten — ones 2. — tens — ones — tens — ones — tens — ones — tens — ones — tens — ones 34 — tens — ones 3. — tens — ones 42 — tens — ones Problem Solving © Harcourt Use . Draw two ways to show 37. Write how many tens and ones for each model. © Harcourt 4. — tens — ones — tens — ones PW20 Practice MXECA09AWK2X_PH_C03_L7.indd Page PW21 8/1/09 12:38:53 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch03/MXECA09AWK2X_PH_C03_L7 Name Lesson 3.7 Skill • Make Reasonable Estimates Circle the better estimate. 1. Will has a box filled with paper clips. About how many paper clips might be in the box? about 10 paper clips about 100 paper clips paper clip 2. Ms. Tapp eats eggs for breakfast. About how many eggs might she eat? about 2 eggs about 20 eggs egg 3. Kathy fills a bucket with marbles. About how many marbles might be in the bucket? about 5 marbles marble about 50 marbles 4. Ty counts the chairs in his classroom. About how many chairs might there be? about 2 chairs about 20 chairs chair dogs for a walk. About how many dogs might they take for a walk? dog PW21 © Harcourt © Harcourt 5. Emma and her father take some about 3 dogs about 30 dogs Practice MXECA09AWK2X_PH_C04_L1.indd Page 22 7/30/09 4:41:47 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch04/MXECA09AWK2X_PH_C04_L1 Name Lesson 4.1 Algebra: Compare Numbers: >, <, or = Write is greater than, is less than, or is equal to. Then write ⬎, ⬍, or ⫽. 1. 2. is greater than 21. 23 — 23 16 — 17. > 21 C 16 HINT: Compare the tens digits. Then compare the ones digits if you need to. Write is greater than, is less than, or is equal to. Then write ⬎, ⬍, or ⫽. 3. 4. 38 — 38. 38 27 — 41. C 38 27 5. C 41 6. 76 — 67. 76 57 — 55. C 67 57 C 55 Problem Solving 7. Which of the numbers in the box could make this true? © Harcourt © Harcourt C 17 61 62 70 60 61 ⬎ — PW22 Practice MXECA09AWK2X_PH_C04_L2.indd Page 23 7/30/09 4:44:09 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch04/MXECA09AWK2X_PH_C04_L2 Name Lesson 4.2 Order Numbers REMEMBER: ⬎ is greater than ⬍ is less than Compare the numbers. Write them in the correct order. Then write ⬎ or ⬍. 1. 42 — greatest > C 38 — > C 35 — least 2. — least C — C — greatest Write the numbers in the correct order. Then write ⬎ or ⬍ . 45 — least 5. C 18 33 — C — greatest 4. 56 C — — greatest greatest 37 — © Harcourt C 61 46 C 6. — 60 — least 55 — C 59 C least — 64 — least 63 C — greatest © Harcourt 3. Problem Solving 7. Write a number in the box 8. Write a number in the box that will make this true. that will make this true. 41 ⬍ ⬍ 44 61 ⬎ PW23 ⬎ 56 Practice MXECA09AWK2X_PH_C04_L3.indd Page 24 7/30/09 4:47:16 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch04/MXECA09AWK2X_PH_C04_L3 Name Lesson 4.3 Even and Odd Numbers Use cubes to show the number as tens and ones. Draw what you built. Write even or odd. 1. 24 2. even —— 4. 21 3. —— 5. —— 17 REMEMBER: Build the ones in pairs. 36 35 —— 6. —— 19 —— Problem Solving 7. Choose two numbers in the box that you can add together to get an odd sum. and — © Harcourt © Harcourt — 8. Choose two numbers in the box that you can add together to get an even sum. — and — PW24 Practice MXECA09AWK2X_PH_C04_L4.indd Page PW27 7/31/09 5:48:12 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch04/MXECA09AWK2X_PH_C04_L4 Name Lesson 4.4 Algebra: Patterns on a Hundred Chart Skip-count. Use the hundred chart to continue the pattern. Write the missing numbers. 1 1. Count by fives. 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 20,— 30 25 ,— 5, 10, 15, — 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 40, 45, 50, —, —, — 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 2. Count by twos. 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 22, 24, 26, —, —, — 60, 62, 64, —, —, —, —, — 3. Count by threes. 27, 30, 33, —, —, —, —, — 78, 81, 84, —, —, —, —, — Problem Solving skip-counting backward by fours. What should the first number in this pattern be? Complete the pattern. , , , The first number in the pattern should be PW25 © Harcourt © Harcourt 4. Jared is writing a number pattern by ,4 . Practice MXECA09AWK2X_PH_C04_L5.indd Page 1 7/30/09 4:45:31 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch04/MXECA09AWK2X_PH_C04_L5 Name Lesson 4.5 Algebra: Skip-Count on a Number Line Skip-count. Write the missing numbers. Write a rule for the pattern. 1. 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 83 , — 88 68, 73, 78, — fives Rule: Count by — —. 2. 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 35, 37, 39, —, — Rule: Count by ——. 3. 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 71, 75, 79, —, — Rule: Count by ——. 4. 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 12, 15, 18, —, — Rule: Count by ——. 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 5. There are 37 people on the bus. Each time the bus stops, 5 more people get on. In how many stops will there be 57 people on the bus? — stops PW26 Practice © Harcourt © Harcourt Problem Solving MXECA09AWK2X_PH_C04_L6.indd Page PW27 7/30/09 4:44:43 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch04/MXECA09AWK2X_PH_C04_L6 Name Lesson 4.6 Problem Solving Strategy: Find a Pattern Find the pattern. Complete the table to solve. 1. How many wings are on 6 airplanes? number of airplanes 1 2 3 number of wings 2 4 6 There are 4 5 6 There are wings on each airplane. wings on 6 airplanes. 2. How many wheels are on 5 wagons? number of wagons 1 2 3 number of wheels 4 8 12 There are 4 5 There are wheels on each wagon. wheels on 5 wagons. Mixed Strategy Practice Choose a Strategy Choose a strategy to solve. 3. Matt has 6 black socks. He has • Draw a Picture • Write a Number Sentence • Find a Pattern 4 white socks. How many socks does he have in all? socks 4. Tasha has 14 grapes. Seven © Harcourt © Harcourt sock are purple. The rest are green. How many grapes are green? grape grapes PW27 Practice MXECA09AWK2X_PH_C04_L7.indd Page PW28 8/1/09 1:47:10 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch04/MXECA09AWK2X_PH_C04_L7 Name Lesson 4.7 Algebra: Number Patterns Use the hundred chart. Extend the pattern. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 1. Skip-count by fives. 41 42 43 44 45 46 47 48 49 50 4, 9, 14, 19 , 24 , 29 , 34 , 39 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 2. Skip-count by tens. 91 92 93 94 95 96 97 98 99 100 8, 18, 28, , , , , 3. Skip-count by twos. 9, 11, 13, , , , , 4. Skip-count by fives. 31, 36, 41, , , , , , , , , 5. Skip-count by tens. 15, 25, 35, © Harcourt 6. Gene is skip-counting by tens. 7. Write the first five numbers He starts the pattern with 26. Will he say 86 in his pattern? Circle yes or no. yes in Gene’s pattern. no , PW28 , , , Practice © Harcourt Problem Solving MXECA09AWK2X_PH_C05_L1.indd Page 1 7/30/09 5:04:25 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch05/MXECA09AWK2X_PH_C05_L1 Name Lesson 5.1 Mental Math: Add on Multiples of Ten Count on to add. 1. 76 36 ⫹ 40 ⫽ — 2. 54 ⫹ 20 ⫽ — 3. 27 ⫹ 30 ⫽ — 4. 78 ⫹ 20 ⫽ — 5. 14 ⫹ 50 ⫽ — 6. 35 ⫹ 30 ⫽ — 7. 17 ⫹ 10 ⫽ — 8. 43 ⫹ 40 ⫽ — 9. 21 ⫹ 40 ⫽ — 10. 46 ⫹ 50 ⫽ — Problem Solving 11. Ben has 22 owl stickers. His friend gives him some more. Now he has 62 owl stickers. Count on by tens. How many owl stickers did Ben’s friend give him? owl sticker © Harcourt © Harcourt — owl stickers 12. Jada has 16 colored markers. She buys some more. Now she has 46 markers. Count on by tens. How many markers did Jada buy? marker — markers PW29 Practice MXECA09AWK2X_PH_C05_L2.indd Page 1 8/1/09 1:16:57 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch05/MXECA09AWK2X_PH_C05_L2 Name Lesson 5.2 Hands On: Regrouping for Addition Use Workmat 11 and . If you can make a ten, regroup. Write how many tens and ones. Write the sum. 1. Add 23 and 9. Workmat Tens 3 Ones 2 32 — — tens — ones 4. Add 65 and 3. Workmat Tens Ones 2. Add 54 and 6. Workmat Tens Ones 3. Add 37 and 7. Workmat Tens Ones — tens — ones — tens — ones — — 5. Add 18 and 6. Workmat Tens Ones 6. Add 42 and 5. Workmat Tens Ones — tens — ones — tens — ones — tens — ones — — — Use Workmat 11 and to solve. © Harcourt © Harcourt Problem Solving 7. Shelby sees 34 owls at the zoo. Then she sees 9 more owls on a nature walk. How many owls does Shelby see in all? — owls PW30 owl Practice MXECA09AWK2X_PH_C05_L3.indd Page 1 7/30/09 5:01:13 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch05/MXECA09AWK2X_PH_C05_L3 Name Lesson 5.3 Hands On: Model 2-Digit Addition Use Workmat 11 and . If you can make a ten, regroup. Write how many tens and ones. Write the sum. 1. Add 33 and 19. 2. Add 46 and 37. 3. Add 51 and 28. Workmat Workmat Workmat Tens 5 Ones Tens 2 52 — — tens — ones 4. Add 24 and 49. Ones Tens Ones — tens — ones — tens — ones — — 5. Add 12 and 77. 6. Add 68 and 29. Workmat Workmat Workmat Tens Ones Tens Ones Tens Ones — tens — ones — tens — ones — tens — ones — — — Draw to solve. © Harcourt © Harcourt Problem Solving 7. Clara has 25 marbles. Keith has 18 marbles. How may marbles do Clara and Keith have in all? marble — marbles PW31 Practice MXECA09AWK2X_PH_C05_L4.indd Page 1 8/1/09 1:20:19 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch05/MXECA09AWK2X_PH_C05_L4 Name Lesson 5.4 Strategy • Make a Model Problem Solving Strategy Practice Use Workmat 11 and Write how many. to make a model. 1. Eric counts 35 bats sleeping in the zoo. He counts 17 bats eating. How many bats does he count in all? — bats bat 2. Sophie draws 29 worms. Aldon draws 14 worms. How many worms do they draw in all? worm Mixed Strategy Practice Choose a strategy to solve. 3. Casey has 24 strawberries. Evan has 20 more strawberries than Casey. How many strawberries does Evan have? — worms Choose a Strategy • Make a Model • Write a Number Sentence • Draw a Picture — strawberries 4. There are 7 owl books in Tim’s classroom. © Harcourt © Harcourt strawberry There are 9 owl books in the library. How many owl books are there altogether? owl book PW32 — owl books Practice MXECA09AWK2X_PH_C05_L5.indd Page 19 7/30/09 5:01:37 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch05/MXECA09AWK2X_PH_C05_L5 Name Lesson 5.5 Hands On: Model and Record 2-Digit Addition Use Workmat 3 and . Draw the regrouping if you need to. Write the sum. 1. 2. Workmat Tens Tens Ones 1 B Ones Workmat Tens 3 6 1 6 __ 5 3. Tens Tens Ones B Ones B 2 9 4 2 __ 2 4. Workmat Tens Ones Ones Workmat Tens Tens Ones 5 1 3 9 __ Ones B 1 3 6 8 __ Problem Solving if you need to. © Harcourt 5. Caroline has 24 bug stickers. Her brother has 17 bug stickers. How many bug stickers do they have in all? Tens B Ones __ bug sticker — bug stickers PW33 Practice © Harcourt Use Workmat 3 and MXECA09AWK2X_PH_C05_L6.indd Page 1 7/30/09 4:58:16 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch05/MXECA09AWK2X_PH_C05_L6 Name Lesson 5.6 Hands On: 2-Digit Addition Use Workmat 3 and . If there are 10 ones, regroup. Write the sum. 1. Workmat Tens Tens 1 B Ones Ones 2. Workmat Tens Ones 5 7 2 7 __ 3. Workmat Tens 8 4 Tens Ones B Ones Workmat Tens Tens 4. Workmat Tens B Ones Ones B Ones 2 1 3 9 __ Ones 2 1 6 5 __ 5. Tens Tens B Ones 1 6 9 __ 6. Workmat Tens 4 7 1 5 __ Ones Tens B Ones 2 4 2 8 __ Draw if you need to. Solve. 7. Ryan has 17 reptile toys. 8. There are 22 bees near the Colin has 9 reptile toys. How many reptile toys do they have altogether? — reptile toys PW34 garden. There are 12 bees near the pond. How many bees are there in all? — bees Practice © Harcourt © Harcourt Problem Solving MXECA09AWK2X_PH_C06_L1.indd Page 1 7/30/09 5:49:40 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch06/MXECA09AWK2X_PH_C06_L1 Name Lesson 6.1 Add 2-Digit Numbers Add. Regroup if you need to. 1. Tens 1 B 2. Ones Tens B Ones 3 5 5 2 2 8 4 6 __ __ 5. 6 3 Tens Ones B 6. 6 3 2 7 __ Tens B Ones 4 8 3 1 __ 3. Tens B 4. Ones Tens B Ones 1 7 3 7 __ 4 4 2 9 __ 7. 8. Tens B Ones 2 2 5 8 __ Tens B Ones 2 4 1 7 __ Problem Solving Circle the problem that helps answer the question. Solve. 9. Sidney has 17 golf balls. Charlie has 2 more golf balls than Sidney. How many golf balls do they have in all? © Harcourt B 1 Ones 7 2 __ Tens B Ones 1 7 1 5 __ Tens B 1 7 1 9 __ — PW35 Ones © Harcourt Tens golf balls Practice MXECA09AWK2X_PH_C06_L2.indd Page 1 7/30/09 5:47:44 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch06/MXECA09AWK2X_PH_C06_L2 Name Lesson 6.2 Practice 2-Digit Addition Add. Regroup if you need to. 1. Tens 1 B Ones 2. Tens B Ones 2 8 4 1 4 6 8 __ __ 5. 7 4 Tens Ones B 5 7 3 2 __ 6. Tens B Ones 2 4 4 6 __ 3. Tens B 4. Ones Tens Ones B 5 3 2 7 __ 9 8 __ 7. 8. Tens B Ones 7 2 5 __ 1 Tens Ones B 3 7 4 4 __ Problem Solving 9. There are 42 swimmers on the swim team. Some are in first grade. Some are in second grade. Which of these could show the number of first and second graders on the swim team? © Harcourt B Ones 1 5 1 7 __ Tens B Ones 3 1 1 4 __ PW36 Tens B Ones 2 7 1 5 __ © Harcourt Tens Practice MXECA09AWK2X_PH_C06_L3.indd Page 19 7/30/09 5:47:36 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch06/MXECA09AWK2X_PH_C06_L3 Name Lesson 6.3 Rewrite 2-Digit Addition Rewrite the numbers. Then add. 1. 35 57 Tens 1 B 2. Ones 22 19 Tens B 3. Ones 43 6 Tens B 4. 16 56 Tens Ones B Ones 3 5 5 7 __ __ __ __ 9 5. 2 21 24 6. 52 38 7. 34 48 8. 29 7 __ __ __ __ 9. 33 27 10. 19 26 11. 44 15 12. 12 29 Problem Solving afternoon. His father hit 82 tennis balls in all. Who hit more tennis balls? © Harcourt © Harcourt 13. Erik hit 36 tennis balls in the morning and 47 tennis balls in the __ PW37 Practice MXECA09AWK2X_PH_C06_L4.indd Page 1 7/30/09 5:47:53 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch06/MXECA09AWK2X_PH_C06_L4 Name Lesson 6.4 Estimate Sums Look at the sum in the box. Write ⬎ or ⬍ to make each sentence true. 10 + 50 = 60 1. 20 + 40 = 60 2. < 60 C > 60 11 ⫹ 50 C C 60 20 ⫹ 42 C 60 8 ⫹ 48 70 + 20 = 90 3. 21 ⫹ 38 40 + 50 = 90 4. C 90 68 ⫹ 18 C 90 C 90 38 ⫹ 48 C 90 73 ⫹ 20 50 + 20 = 70 5. 40 ⫹ 53 30 + 40 = 70 6. C 70 52 ⫹ 20 C 70 C 70 30 ⫹ 39 C 70 47 ⫹ 19 32 ⫹ 42 Problem Solving 30 + 20 = 50 22 18 — ⫹ — ⬎ 50 — ⫹ — ⬍ 50 — ⫹ — ⬎ 50 — ⫹ — ⬍ 50 — ⫹ — ⬎ 50 — ⫹ — ⬍ 50 PW38 31 29 © Harcourt Choose from the numbers on the flag to write true sentences. Use the sum in the box to help. © Harcourt 7. Practice MXECA09AWK2X_PH_C06_L5.indd Page 1 7/30/09 5:48:00 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch06/MXECA09AWK2X_PH_C06_L5 Name Lesson 6.5 More 2-Digit Addition Add. Regroup if you need to. 1. 1 2. 47 ⫹ 24 _ 28 ⫹ 35 _ 63 6. 5. 16 ⫹ 51 _ 67 ⫹ 29 _ 62 ⫹ 31 _ 78 ⫹ 12 _ 59 ⫹ 31 _ 8. 11. 18 ⫹ 34 _ 53 ⫹ 19 _ 34 ⫹ 52 _ 22 ⫹ 56 _ 14. 4. 7. 10. 9. 13. 3. 27 ⫹ 37 _ 12. 23 ⫹ 45 _ 15. 35 ⫹ 16 _ 44 ⫹ 17 _ 16. 78 ⫹ 11 _ 17. The boys’ softball team has 34 balls © Harcourt © Harcourt Problem Solving and 28 mitts. The girls’ softball team has 27 balls and 33 mitts. How many mitts do they have in all? — mitts PW39 Practice MXECA09AWK2X_PH_C06_L6.indd Page 1 7/31/09 4:22:23 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch06/MXECA09AWK2X_PH_C06_L6 Name Lesson 6.6 Problem Solving Skill: Use a Table Use the table to solve. Goals Scored This Season Player Number of Goals Terry Jose Darcy Otto 16 24 27 18 1. How many goals did Jose and Darcy score in all? 51 — goals 1 2 + 2 4 7 5 1 2. How many goals did Terry and Otto score in all? — goals 3. Which two players scored 45 points and © Harcourt © Harcourt in all? 4. Which two players scored 40 goals in all? Add to check your answer. and PW40 Practice MXECA09AWK2X_PH_C06_L7.indd Page 1 8/13/09 1:47:41 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch06/MXECA09AWK2X_PH_C06_L7 Name Lesson 6.7 Algebra: Break Apart Numbers to Add Break apart the addends. Find the sum. 15 1. 10 5 — — 47 40 7 — ? Add the tens. — — — Add the ones. — — — — How many in all? — — — So, 15 + 47 —. 23 2. — — 58 — ? Add the tens. — — — — Add the ones. — — — How many in all? — — — So, 23 58 —. 35 3. — — — — 19 — ? Add the tens. — — — — Add the ones. — — — How many in all? — — — 4. Eric has 23 soccer stamps and some © Harcourt © Harcourt So, 35 19 —. football stamps. He has 60 stamps in all. How many football stamps does he have? — football stamps PW41 stamp Practice MXECA09AWK2X_PH_C07_L1.indd Page 1 7/30/09 5:59:29 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch07/MXECA09AWK2X_PH_C07_L1 Name Lesson 7.1 Mental Math: Subtract Multiples of Ten Count back to subtract. 1. 25 45 ⫺ 20 ⫽ — 2. 63 ⫺ 30 ⫽ — 3. 58 ⫺ 10 ⫽ — 4. 42 ⫺ 30 ⫽ — 5. 37 ⫺ 20 ⫽ — 6. 75 ⫺ 40 ⫽ — 7. 86 ⫺ 50 ⫽ — 8. 49 ⫺ 10 ⫽ — 9. 81 ⫺ 40 ⫽ — 10. 77 ⫺ 50 ⫽ — 11. 53 ⫺ 40 ⫽ — 12. 93 ⫺ 20 ⫽ — Problem Solving Chandra has 37 red beads. Julia gives 30 red beads to Chandra. How many red beads does each child have now? © Harcourt © Harcourt 13. Julia has 55 red beads. bead Julia: — red beads Chandra: — red beads PW42 Practice MXECA09AWK2X_PH_C07_L2.indd Page 1 7/30/09 5:59:44 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch07/MXECA09AWK2X_PH_C07_L2 Name Lesson 7.2 Hands On: Regrouping for Subtraction Use Workmat 11 and . Regroup if you need to. Write how many tens and ones. Write the difference. 1. Subtract 6 from 22. 15. Workmat Tens Ones 6 16 — 1 2. Subtract 4 from — tens — ones 4. Subtract 8 from 45. 36. Workmat Tens Ones Tens Ones Workmat Tens Ones — tens — ones — tens — ones — — 5. Subtract 5 from 52. Workmat 3. Subtract 7 from 6. Subtract 3 from 31. Workmat Tens Ones Workmat Tens Ones — tens — ones — tens — ones — tens — ones — — — Use Workmat 11 and to solve. © Harcourt © Harcourt Problem Solving 7. Jason has 25 rubber stamps. Trisha has 7 fewer rubber stamps than Jason. How many rubber stamps does Trisha have? — rubber stamps PW43 rubber stamp Practice MXECA09AWK2X_PH_C07_L3.indd Page 1 7/30/09 5:59:17 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch07/MXECA09AWK2X_PH_C07_L3 Name Lesson 7.3 Hands On: Model 2-Digit Subtraction Use Workmat 11 and . Regroup if you need to. Write how many tens and ones. Write the difference. 1. Subtract 24 from 43. 65. Workmat Tens Ones 9 19 — 1 2. Subtract 17 from — tens — ones 4. Subtract 15 from 33. 56. Workmat Tens Ones Tens Ones Workmat Tens Ones — tens — ones — tens — ones — — 5. Subtract 46 from 6. Subtract 19 from 68. Workmat 3. Subtract 27 from 47. Workmat Tens Ones Workmat Tens Ones — tens — ones — tens — ones — tens — ones — — — Draw to solve. © Harcourt © Harcourt Problem Solving 7. Ava has 42 sequins. She gives 14 sequins to Beth. How many sequins does Ava have left? — sequins PW44 sequins Practice MXECA09AWK2X_PH_C07_L4.indd Page 19 7/31/09 4:45:09 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch07/MXECA09AWK2X_PH_C07_L4 Name Lesson 7.4 Strategy • Make a Model Problem Solving Strategy Practice Use Workmat 11 and Write how many. to make a model. 1. Juan has 52 moon shapes. He has 38 heart shapes. How many more moon shapes does he have than heart shapes? moon shape — more moon shapes 2. There are 45 paintbrushes in a cup. Dennis takes 28 paintbrushes out of the cup. How many paintbrushes are left in the cup? paintbrush — paintbrushes 3. Laura has 47 stickers. Chad has 9 fewer stickers than Laura. How many stickers does Chad have? Go ! You sticker — stickers some pieces of blue yarn in a box. There are 61 pieces of yarn altogether. How many pieces of blue yarn are in the box? yarn PW45 © Harcourt © Harcourt 4. There are 37 pieces of red yarn and — pieces of blue yarn Practice MXECA09AWK2X_PH_C07_L5.indd Page 19 7/30/09 5:59:34 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch07/MXECA09AWK2X_PH_C07_L5 Name Lesson 7.5 Hands On: Model and Record 2-Digit Addition Use Workmat 3 and . Draw the regrouping if you need to. Write the difference. 1. 2. tens Ones tens B B Workmat Tens ones Workmat Tens 3 1 6 __ 3. Ones ones B B 2 3 5 __ 4. tens Workmat Tens Ones ones B B tens Workmat Tens 6 5 7 __ Ones ones B B 4 8 9 __ Problem Solving Use Workmat 3 and if you need to. 3 paintbrushes to one group of students and 5 paintbrushes to another group. How many paintbrushes does he have left? tens ones B B __ __ paintbrush — paintbrushes PW46 Practice © Harcourt © Harcourt 5. Mr. Thome has 24 paintbrushes. He gives MXECA09AWK2X_PH_C07_L6.indd Page 19 8/13/09 12:10:47 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch07/MXECA09AWK2X_PH_C07_L6 Name Lesson 7.6 Hands On: Subtract 2-Digit Numbers Use Workmat 3 and . Regroup if you need to. Write the difference. 1. Tens 4 18 B B Workmat Tens Ones Ones 5 8 Tens Ones 2. Tens Workmat Tens Ones Workmat Tens Ones B B Tens Workmat Tens Ones 4. Ones B B Tens Workmat Tens 6 4 2 2 __ 5. B B 3 5 1 7 __ 1 9 __ 3 9 3. Ones Ones 6. B B 7 6 3 9 __ Tens Workmat Tens Ones 4 5 1 6 __ Ones Ones B B 5 7 2 4 __ Use Workmat 3 and if you need to. 7. Jack models a problem. He starts with 5 ones and 6 tens. He has 2 tens and 7 ones left. What problem did he solve? PW47 Tens Ones B B __ Practice © Harcourt © Harcourt Problem Solving MXECA09AWK2X_PH_C08_L1.indd Page 19 7/17/09 5:45:46 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch08/MXECA09AWK2X_PH_C08_L1 Name Lesson 8.1 2-Digit Subtraction Use Workmat 3 and 1. Tens Ones 2. 7 B 12 B . Subtract. Tens 3. Ones Tens Ones 4. B B B B Tens Ones B B 3 8 7 1 8 6 4 / 2/ 3 7 5 1 5 2 2 __ __ __ __ 5. 4 5 Tens Ones 6. B B Tens 7. Ones Tens Ones 8. B B B B Tens Ones B B 5 7 4 2 9 3 2 8 4 8 1 7 4 7 9 __ __ __ __ 9. Tens Ones 10. B B Tens Ones 11. B B Tens Ones B B 12. Tens Ones B B 8 0 4 6 5 1 3 4 3 3 2 8 1 4 5 __ __ __ __ Use Workmat 3 and to solve. 13. Jodi and Sean each put 12 rubber balls into a bag. Then Tyler takes 18 rubber balls out of the bag. How many rubber balls are in the bag now? rubber balls PW48 © Harcourt © Harcourt Problem Solving rubber ball Practice MXECA09AWK2X_PH_C08_L2.indd Page 19 7/17/09 5:46:03 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch08/MXECA09AWK2X_PH_C08_L2 Name Lesson 8.2 Practice 2-Digit Subtraction Subtract. Regroup if you need to. 1. Tens Ones 5 / 7 / 2. Tens Ones 3. B B 17 4 B B Tens Ones B B 4. Tens Ones B B 8 3 4 5 2 5 2 7 __ __ 9 2 6 4 __ 6. 8. 2 9 __ 2 8 5. Tens Ones B B 3 Tens Ones 7. B B Tens Ones B B 6 4 5 8 3 6 2 8 2 1 __ __ __ Tens Ones B B 7 0 2 6 __ Problem Solving Circle the problem that will help you answer the question. Then solve. 9. Joe has 34 buttons. Tens Ones Tens Ones Tens Ones Paul has 2 more buttons than Joe. Andy has 17 fewer 3 6 3 4 1 7 buttons than Paul. 1 7 1 7 __ 2 __ __ How many buttons does Andy have? PW49 B B B B Practice © Harcourt © Harcourt B B MXECA09AWK2X_PH_C08_L3.indd Page 19 7/17/09 5:46:30 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch08/MXECA09AWK2X_PH_C08_L3 Name Lesson 8.3 Rewrite 2-Digit Subtraction Rewrite the numbers. Then subtract. 45 27 1. Tens Ones 4 / 5 / 1 8 2. 84 56 Tens Ones Tens 91 43 6. B B 75 38 Tens Ones 2 7 __ __ __ 5. 66 49 4. B B B B B 3 B 15 37 14 3. 48 15 7. Ones B B __ 63 36 8. B B B B B B __ __ __ __ 82 43 9. 10. B B 55 17 28 19 11. 40 21 12. B B B B B B __ __ __ __ Problem Solving 13. Tens Ones 4 B 15 B __ 2 8 14. Tens Ones 5 B 12 B __ 1 PW50 6 15. Tens Ones 7 B 12 B __ 3 9 Practice © Harcourt © Harcourt Write the missing numbers. MXECA09AWK2X_PH_C08_L4.indd Page 19 7/17/09 5:46:42 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch08/MXECA09AWK2X_PH_C08_L4 Name Lesson 8.4 More 2-Digit Subtraction Subtract. Regroup if you need to. 1. 2. 3. 4. 4 16 56 // 39 _ 17 5. 72 59 _ 47 35 _ 6. 92 25 _ 7. 52 23 _ 11. 44 22 _ 53 15 _ 13. 8. 36 17 _ 10. 9. 85 54 _ 12. 76 38 _ 14. 74 46 _ 63 28 _ 16. 15. 68 29 _ 60 33 _ 90 24 _ 81 57 _ Problem Solving 6 more toy cars than Derek. Abby has 13 fewer toy cars than Mandy. How many toy cars does Abby have? toy car © Harcourt © Harcourt 17. Derek has 24 toy cars. Mandy has toy cars PW51 Practice MXECA09AWK2X_PH_C08_L5.indd Page 19 7/17/09 5:47:51 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch08/MXECA09AWK2X_PH_C08_L5 Name Lesson 8.5 Use Addition to Check Subtraction Subtract. Add to check. 1 1. 6 12 72 // ⴚ26 2. 46 ⴙ 46 3. 44 ⴚ15 26 ⴙ 5. 86 ⴚ48 ⴙ 33 ⴚ24 ⴙ 6. 21 ⴚ7 ⴙ 7. ⴙ 8. 75 ⴚ39 ⴙ 72 4. 35 ⴚ18 63 ⴚ38 ⴙ 9. 40 ⴚ3 ⴙ Solve. Then use addition to check your answer. 10. Taylor had 42 train track pieces. She built a train track. She has 24 pieces left. How many pieces did Taylor use to build the track? ⴚ © Harcourt © Harcourt Problem Solving ⴙ pieces PW52 Practice MXECA09AWK2X_PH_C08_L6.indd Page 19 7/17/09 5:48:05 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch08/MXECA09AWK2X_PH_C08_L6 Name Lesson 8.6 Estimate Differences Look at the difference in the box. Then write > or < to make each sentence true. 1. 80 ⫺ 40 ⫽ 40 80 ⫺ 37 80 ⫺ 42 3. 40 4. 80 ⫺ 22 80 ⫺ 19 6. 20 20 60 ⫺ 10 ⫽ 50 60 ⫺ 8 60 ⫺ 11 60 60 20 20 50 ⫺ 30 ⫽ 20 50 ⫺ 27 50 ⫺ 34 40 40 80 ⫺ 20 ⫽ 60 70 ⫺ 50 ⫽ 20 70 ⫺ 49 70 ⫺ 51 > 40 60 ⫺ 20 ⫽ 40 60 ⫺ 22 60 ⫺ 17 5. 2. 50 50 Problem Solving 7. Write numbers in the blanks to make true sentences. Use the difference in the box to help. 90 ⫺ ⬎ 30 90 ⫺ ⬍ 30 90 ⫺ ⬎ 30 90 ⫺ ⬍ 30 90 ⫺ ⬎ 30 90 ⫺ ⬍ 30 PW53 Practice © Harcourt © Harcourt 90 ⫺ 60 ⫽ 30 MXECA09AWK2X_PH_C08_L7.indd Page 19 7/17/09 5:48:40 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch08/MXECA09AWK2X_PH_C08_L7 Name Lesson 8.7 Problem Solving Skill: Use a Table Use the table to answer the questions. Shirts in a Store Color Number of Shirts blue 45 green 54 yellow 27 red 36 1. How many more blue shirts than yellow shirts are in the store? more blue shirts 2. The green shirts and red shirts are all on one shelf. How many shirts are on that shelf? shirts shirts. How many blue shirts are left in the store? blue shirts 4. How many more green shirts than red shirts are in the store? more green shirts PW54 Practice © Harcourt © Harcourt 3. The store sells 18 blue MXECA09AWK2X_PH_C08_L8.indd Page 19 7/17/09 5:48:53 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch08/MXECA09AWK2X_PH_C08_L8 Name Lesson 8.8 Mental Math: Find Differences Add the same number to both numbers. 1. 64 36 ? 64 4 68 2. 85 48 ? 85 36 4 40 48 3. 51 17 ? 51 17 Subtract. 68 40 28 So, 64 36 28 So, 85 48 So, 51 17 Use mental math to solve. 4. Isak has 28 trading cards. He needs 42 trading cards to make a set. How many more trading cards does he need to make a set? © Harcourt © Harcourt Problem Solving more trading cards trading card PW55 Practice MXECA09AWK2X_PH_C08_L9.indd Page 19 7/31/09 5:01:47 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch08/MXECA09AWK2X_PH_C08_L9 Name Lesson 8.9 Mixed Practice Find the sum or difference. 1. 33 ⫹ 12 _ 45 2. 64 ⫺ 47 _ 3. 25 ⫹ 57 _ 4. 83 ⫺ 36 _ 5. 46 ⫹ 34 _ 6. 81 ⫺ 17 _ 7. 42 ⫺ 21 _ 8. 12 ⫹ 67 _ 9. 61 + 29 _ 10. 72 ⫺ 28 _ 11. 29 ⫹ 41 _ 12. 52 ⫺ 39 _ 13. 31 ⫺ 12 _ 14. 64 ⫺ 18 _ 15. 49 ⫹ 22 _ 16. 75 ⫺ 48 _ 17. 43 ⫹ 19 _ 18. 22 ⫹ 35 _ 19. 32 ⫺ 9 _ 20. 67 ⫹ 15 _ Problem Solving Then they took 9 crayons out of the box and put them into a bucket. How many crayons were left in the box? crayon © Harcourt © Harcourt 21. Kinzy and Ezra each put 22 crayons in a box. crayons PW56 Practice MXECA09AWK2X_PH_C09_L1.indd Page PW57 8/13/09 12:12:19 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch09/MXECA09AWK2X_PH_C09_L1 Name Lesson 9.1 Picture Graphs Use the picture graph to answer the questions. Books on Ben’s Bookshelf mystery fiction biography Key: Each stands for 1 book. 1. How many mystery books are on Ben’s bookshelf? 3 mystery books 2. How many more fiction books than biography books are on Ben’s bookshelf? more fiction books 3. How many books are on Ben’s bookshelf in all? books Use the picture graph above. 4. Ben put some science books on his bookshelf. He put twice as many science books as mystery and biography books together. How many science books did he put on the bookshelf? PW57 © Harcourt © Harcourt Problem Solving science books Practice MXECA09AWK2X_PH_C09_L2.indd Page 19 7/17/09 5:49:59 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch09/MXECA09AWK2X_PH_C09_L2 Name Lesson 9.2 Take a Survey on a Tally Chart 1. Take a survey. Ask 10 Our Favorite Figures classmates which figure is their favorite. Use tally marks to show their answers. Figure Tally square circle triangle 2. Draw in the picture graph to show the information in the tally chart. Our Favorite Figures square circle triangle stands for 1 child. Problem Solving Our Favorite Sandwiches © Harcourt 3. Mason wants to ask 12 classmates which sandwich is their favorite. Look at the results he has recorded. How many more classmates does he need to ask? Sandwich Tally ham © Harcourt Key: Each turkey peanut butter more classmates PW58 Practice MXECA09AWK2X_PH_C09_L3.indd Page 19 7/17/09 5:50:14 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch09/MXECA09AWK2X_PH_C09_L3 Name Lesson 9.3 Read a Bar Graph Numbers of Pages Use the bar graph to answer the questions. 10 9 8 7 6 5 4 3 2 1 0 Pages Read Last Week REMEMBER: Look at where each bar ends. Luke Maggie Max Olivia Children Olivia 1. Who read the most pages? 2. Who read the fewest pages? 3. How many more pages did Olivia read than Maggie? more pages 4. How many pages did the children read in all? pages Use the bar graph to answer the questions. Write true or false. © Harcourt © Harcourt Problem Solving 5. Olivia read 2 fewer pages than Max. 6. Maggie read the same number of pages as Luke. 7. Luke read 1 more page than Max. PW59 Practice MXECA09AWK2X_PH_C09_L4.indd Page 19 7/17/09 5:50:26 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch09/MXECA09AWK2X_PH_C09_L4 Name Lesson 9.4 Make a Bar Graph 1. Use the picture to complete the table. Then shade the bars in the graph to show the data. Figures Figure Number square 3 triangle Number Figures circle 6 5 4 3 2 1 0 square triangle Use the bar graph to answer the questions. 2. How many triangles are there ? circle Figures triangles 3. How many circles are there ? 4. How many figures are not squares ? 5. How many more triangles than squares are there? circles figures more triangles Problem Solving pieces of fruit PW60 apples pears plums 0 1 2 3 4 5 6 Number Practice © Harcourt Fruit in the Fruit Bowl in a fruit bowl. If 4 more plums are added to the bowl, how many pieces of fruit will there be in all? Fruit © Harcourt 6. This bar graph shows fruit MXECA09AWK2X_PH_C09_L5.indd Page 19 7/30/09 4:55:20 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch09/MXECA09AWK2X_PH_C09_L5 Name Lesson 9.5 Strategy • Make a Bar Graph dogs cats fish hamsters 0 1 2 3 4 5 6 7 Number of Children Use the bar graph to answer the question. 2. How many children did not choose dogs? Mixed Strategy Practice 9 children Choose a Strategy 3. Sam has 27 dominoes. • Find a Pattern • Draw a Picture • Make a Model His friend Jake gives him 9 more. How many dominoes does Sam have now? © Harcourt 8 © Harcourt Animals Addie took a survey of her classmates’ favorite pets. 8 classmates chose dogs, 4 chose cats, 6 chose fish, and 3 chose hamsters. 1. Complete the bar graph to show the information. Then write a title for the bar graph. dominoes 4. The first number in a number pattern is 12. A rule for the pattern is count by 3s. What is the fourth number in the pattern? PW61 Practice MXECA09AWK2X_PH_C09_L6.indd Page 19 7/17/09 5:50:52 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch09/MXECA09AWK2X_PH_C09_L6 Name Lesson 9.6 Pictographs Use the pictograph to answer the questions. HINT: How many groups of 2 children chose each month? Our Favorite Months January April August November Key: Each stands for 2 children. 1. How many children chose April? 10 children 2. Which month did the fewest children choose? 3. How many more children chose August than January? more children 4. How many children voted altogether? children Problem Solving classmates to find their favorite juice. Complete his pictograph to show this information. 4 chose apple. 8 chose grape. 10 chose orange. Favorite Juice © Harcourt © Harcourt 5. Jamie surveyed his apple grape orange Key: Each PW62 stands for 2 children. Practice MXECA09AWK2X_PH_C09_L7.indd Page 1 7/17/09 5:51:06 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch09/MXECA09AWK2X_PH_C09_L7 Name Lesson 9.7 Range and Mode Use the line plot to answer the questions. ✗ ✗ ✗ ✗ ✗ ✗ ✗ ✗ 3 4 ✗ ✗ ✗ ✗ ✗ ✗ ✗ Each x on the line plot stands for one child. ✗ 5 6 7 8 Number of Markers 9 1. How many children have 3 markers? 3 children 2. How many children have 5 markers? children 3. Write a number sentence to find the range of the data. C C 4. What is the mode of the data? The mode of the data is . © Harcourt 5. Karen’s class made a line plot of the number of pets each student has. How many students have more than 1 pet? ✗ ✗ ✗ 1 students PW63 ✗ ✗ ✗ ✗ ✗ ✗ ✗ © Harcourt Problem Solving ✗ ✗ 2 3 4 Number of Pets Practice MXECA09AWK2X_PH_C10_L1.indd Page 64 7/31/09 5:06:06 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch10/MXECA09AWK2X_PH_C10_L1 Name Lesson 10.1 Dimes, Nickels, and Pennies Count coins to find the total value. 1. , , , , , , , , , , , , , , , , , , , , 2. 3. 4. Problem Solving © Harcourt © Harcourt 5. Draw two ways to make 15¢. PW64 Practice MXECA09AWK2X_PH_C10_L2.indd Page 65 7/17/09 5:51:41 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch10/MXECA09AWK2X_PH_C10_L2 Name Lesson 10.2 Half Dollars and Quarters Count coins to find the total value. 1. , , , , , 2. , , , , , , , 3. , , 4. , , , , Problem Solving total value of 70¢. One coin is a half dollar. Draw the coins she may have. PW65 © Harcourt © Harcourt 5. Sarah has some coins with a Practice MXECA09AWK2X_PH_C10_L3.indd Page 66 7/17/09 5:51:53 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch10/MXECA09AWK2X_PH_C10_L3 Name Lesson 10.3 Count Collections Draw and label coins from greatest to least value. Write the total value. 1. 81¢ 2. 3. Problem Solving Then write the other money amounts correctly. 99¢ ¢47 15¢ 33 ¢5 81¢ 2¢4 73 PW66 © Harcourt © Harcourt 4. Circle the money amounts that are written correctly. Practice MXECA09AWK2X_PH_C10_L4.indd Page 19 7/17/09 5:52:06 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch10/MXECA09AWK2X_PH_C10_L4 Name Lesson 10.4 Hands On: Make the Same Amounts Use coins. Show the value in two ways. Draw and label each coin. 1. 36¢ 2. 65¢ 3. 78¢ 4. © Harcourt © Harcourt 40¢ Problem Solving 5. Mariel has three coins with a total value of 60¢. What coins could she have? Draw and label the coins. PW67 Practice MXECA09AWK2X_PH_C10_L5.indd Page 19 7/17/09 5:52:25 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch10/MXECA09AWK2X_PH_C10_L5 Name Lesson 10.5 Strategy • Make a List Problem Solving Strategy Practice Make a list to solve. 1. Annie has 57¢. What are some different ways to show how much money she has using dimes, nickels, and pennies? Dimes Nickels Pennies Total Value 5 1 2 57¢ Mixed Strategy Practice Choose a Strategy • Make a List • Find a Pattern • Draw a Picture Choose a strategy to solve. 2. Dora is trading nickels for pennies. number of nickels 1 number of pennies 5 2 3 4 5 pennies 3. Dean has 10 marbles. He gets 5 more. How many marbles does he have now? marbles PW68 Practice © Harcourt © Harcourt She trades 1 nickel for 5 pennies. She has 5 nickels. How many pennies should she get for 5 nickels? MXECA09AWK2X_PH_C11_L1.indd Page 19 7/31/09 2:07:08 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch11/MXECA09AWK2X_PH_C11_L1 Name Lesson 11.1 Compare Amounts Write the total value of each group. Then write >, <, or =. 1. 42¢ > 32¢ 2. Problem Solving © Harcourt © Harcourt 3. 4. Sandra buys a rose for 1 half dollar and 1 dime. She buys a daisy for 2 quarters and 1 nickel. Circle the flower that costs more money. rose rose daisy daisy PW69 Practice MXECA09AWK2X_PH_C11_L2.indd Page 19 7/31/09 2:08:59 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch11/MXECA09AWK2X_PH_C11_L2 Name Lesson 11.2 Strategy • Act It Out Problem Solving Strategy Practice Use coins to act out a problem. Draw the coins. Write the total value. Then answer the question. 1. Donna has 1 quarter, 2 dimes, and 3 nickels. Does she have enough to buy the pen? pen 2. Jay has 1 half dollar and 2 nickels. Does he have enough to buy the toy duck? toy duck Mixed Strategy Practice Choose a Strategy • • • © Harcourt 3. Jill has 2 quarters, 2 dimes, and 2 nickels. She gets 3 more nickels. How much money does she have? Act It Out Make a List Draw a Picture © Harcourt Choose a strategy to solve. 4. Nate has 1 quarter and 1 dime. He wants to change his coins for nickels. How many nickels should he get? nickels PW70 Practice MXECA09AWK2X_PH_C11_L3.indd Page 19 7/31/09 2:09:13 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch11/MXECA09AWK2X_PH_C11_L3 Name Lesson 11.3 Add and Subtract Money Add or subtract to solve. 1. Teri has 42¢. Her mom gives her 19¢. Now Teri has . 2. Noah has 75¢. He gives his brother 25¢. Now Noah has . 3. Jen has 38¢. She finds 15¢. Now Jen has . 4. Juan has 87¢. He spends 39¢. Now Juan has . 5. Todd has 94¢. He buys some juice for 56¢. . Problem Solving © Harcourt © Harcourt Now Todd has 6. Marie takes 22¢ from her coin bank. Now she has 49¢ left. How much money did she start with? PW71 Practice MXECA09AWK2X_PH_C11_L4.indd Page 19 10/08/2009 20:13:16 elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch11/MXECA09AWK2X_PH_C11_L4 Name Lesson 11.4 Strategy • Predict and Test Problem Solving Strategy Practice Make a prediction and check it to solve. 52¢ alligator 39¢ lion 19¢ giraffe 63¢ elephant 1. Dee has 68¢. Which two toys can she buy? 2. Terry has 91¢. Which two toys can he buy for exactly that amount? Mixed Strategy Practice Choose a Strategy • • • © Harcourt 3. Diego has 7 nickels and 15 dimes. How many coins does Diego have in all? Predict and Test Make a Model Draw a Picture coins 4. Elsa has 32 pennies. Paul has 29 pennies. How many pennies do they have in all? PW72 pennies Practice © Harcourt Choose a strategy to solve. MXECA09AWK2X_PH_C11_L5.indd Page 19 8/9/09 2:44:27 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch11/MXECA09AWK2X_PH_C11_L5 Name Lesson 11.5 One Dollar Circle coins to make $1.00. Cross out the coins you do not use. 1. 2. © Harcourt © Harcourt 3. Problem Solving 4. Keisha has $1.00 in her bag. She has 2 of one kind of coin. She has 1 of another kind of coin. Draw the coins she has. PW73 Practice MXECA09AWK2X_PH_C11_L6.indd Page 19 10/08/2009 20:13:40 elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch11/MXECA09AWK2X_PH_C11_L6 Name Lesson 11.6 Make Change to $1.00 Count on from the price to find the change. 1. You have You buy 84¢ chalk 2. You have 85¢ , 90¢ , Your change is $1.00 16¢ . You buy 38¢ pencil 3. You have , , Your change is . You buy 53¢ notepad 4. You have , , Your change is . You buy 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 centimeters © Harcourt 70¢ , Your change is , . Problem Solving 5. Meg buys a pencil for 60¢. She pays with 3 coins and gets 15¢ change. Draw the 3 coins Meg used to buy the pencil. PW74 Practice © Harcourt ruler MXECA09AWK2X_PH_C12_L1.indd Page 89 7/30/09 4:30:12 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch12/MXECA09AWK2X_PH_C12_L1 Name Lesson 12.1 Identify Solid Figures Use the solid figures to help you remember. Circle the objects that have the same shape. Cross out the objects that do not belong. Name the solid figures you circled. sphere rectangular prism pyramid cylinder cube cone 1 1. 3 2 cube 2. 3. 4. Problem Solving It is not a cylinder. Circle the figure Jane drew. PW75 © Harcourt © Harcourt 5. Jane drew a solid figure. It is not a cube. Practice MXECA09AWK2X_PH_C12_L2.indd Page 90 7/30/09 4:35:39 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch12/MXECA09AWK2X_PH_C12_L2 Name Lesson 12.2 14.2 Hands On: Sort Solid Figures Write yes or no to tell about the surfaces of each object. Object 1. flat surfaces no curved surfaces yes both flat and curved surfaces no 2. 3. 5. 1 4. 3 2 6. Problem Solving Find the figure that answers the riddle. Then write the name of the figure. 7. I have only a curved surface. © Harcourt © Harcourt Circle me. Which shape am I ? 8. I have only flat surfaces. Draw an X through me. Which shape am I? PW76 Practice MXECA09AWK2X_PH_C12_L3.indd Page 91 7/16/09 11:56:20 PM epg /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch12/MXECA09AWK2X_PH_C12_L3 Name Lesson 12.3 Hands On: Attributes of Solid Figures edge face vertex Use solid figures. Complete the table. Write how many. 1. solid figure faces edges vertices 2. rectangular prism 3. 4. pyramid cube rectangular prism 6 12 8 Problem Solving 6. Clark has 2 solid figures. His figures. Each solid figure has the same number of edges. What solids does Wen have? figures have 10 faces in all. What solids does Clark have? © Harcourt © Harcourt 5. Wen has two different solid PW77 Practice MXECA09AWK2X_PH_C12_L4.indd Page 93 7/16/09 11:56:01 PM epg /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch12/MXECA09AWK2X_PH_C12_L4 Name Lesson 12.4 14.5 Hands On: Make Plane Shapes from Solid Figures Use solid figures. Circle the solid figure the faces make. 1. 2. pyramid cube cylinder 3. rectangular prism cone cube rectangular prism pyramid cube 4. pyramid sphere cube Problem Solving © Harcourt © Harcourt Circle the solid figure that this will make if you fold it and tape it together. 5. PW78 Practice MXECA09AWK2X_PH_C12_L5.indd Page 90 7/16/09 11:56:11 PM epg /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch12/MXECA09AWK2X_PH_C12_L5 Name Lesson 12.5 Strategy • Make a Table Problem Solving Strategy Practice Name and complete the table. Then add to solve. 1. Tasha is making three pyramids. How many triangles does she need to make these three figures? Tasha needs triangles. 2. Andy is making three cubes. How many squares does he need to make these three figures? squares. Mixed Strategy Practice Choose a Strategy Choose a strategy to solve. • Make a Table • Draw a Picture • Make a List 3. Juanita wants to make five cylinders. How many circles will she need to make these five solid figures? Juanita will need © Harcourt © Harcourt Andy needs circles. PW79 Practice MXECA09AWK2X_PH_C13_L1.indd Page 1 7/31/09 2:14:07 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch13/MXECA09AWK2X_PH_C13_L1 Name Lesson 13.1 Identify Plane Figures triangle square circle rectangle Color the figures. 1. Color the rectangles gray. 2. Color the triangles red. 3. Color the circles green. 4. Color the squares yellow. 5. Color the triangles orange. 6. Color the squares pink. 7. Color the rectangles purple. 8. Color the circles brown. Problem Solving 9. © Harcourt © Harcourt Trace the figures. Write how many. 10. — triangles — PW80 rectangles Practice MXECA09AWK2X_PH_C13_L2.indd Page 19 8/1/09 2:50:35 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch13/MXECA09AWK2X_PH_C13_L2 Name Lesson 13.2 Sort Plane Figures Write a title to describe each group of plane figures. 1. 2. 3. 4. Problem Solving © Harcourt © Harcourt Write true or false for each sentence. 5. A rectangle has fewer than 4 vertices. 6. A square has 4 sides and 4 vertices. 7. A triangle has more than 2 vertices. 8. A rectangle has 3 sides and 4 vertices. PW81 Practice MXECA09AWK2X_PH_C13_L3.indd Page 19 7/31/09 2:19:40 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch13/MXECA09AWK2X_PH_C13_L3 Name Lesson 13.3 Combine Plane Figures Use pattern blocks. Combine sides of figures to make a new figure. Trace the new figure. 1. 2. 3. 4. Problem Solving , , and . © Harcourt © Harcourt 5. Circle a figure you can make using PW82 Practice MXECA09AWK2X_PH_C13_L4.indd Page 19 7/31/09 2:20:11 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch13/MXECA09AWK2X_PH_C13_L4 Name Lesson 13.4 Separate Plane Figures Use paper figures. Fold to make three new figures. Cut along the folds. Trace the new figures. 1. 2. 3. 4. © Harcourt © Harcourt Problem Solving 5. Jeff wants to make a plane figure. He uses 2 colors of pattern blocks. Draw and color a figure that Jeff could make. PW83 Practice MXECA09AWK2X_PH_C13_L5.indd Page 19 7/31/09 2:56:40 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch13/MXECA09AWK2X_PH_C13_L5 Name Lesson 13.5 Problem Solving Strategy: Use Logical Reasoning Use logical reasoning to solve. Cross out the figures that do not fit the information. Circle the figure that answers the question. 1. I am a plane figure. I have 3 vertices. Which figure am I? 2. I am a plane figure. I have more than 3 sides. I have fewer than 5 vertices. Which figure am I? Mixed Strategy Practice Choose a strategy to solve. 3. Sheila has 2 quarters and 1 dime. Her sister gives her 3 nickels and a penny. How much money does Sheila have now? Choose a Strategy • • • Use Logical Reasoning Draw a Picture Act it Out ¢ nickels. Her sister gives her some quarters. Now she has 12 coins in all. How many quarters did her sister give her? © Harcourt © Harcourt 4. Doris has 3 pennies and 5 quarters PW84 Practice MXECA09AWK2X_PH_C13_L6.indd Page 19 7/31/09 2:22:01 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch13/MXECA09AWK2X_PH_C13_L6 Name Lesson 13.6 Congruent Figures Draw a figure congruent to the figure shown. 1. 2. 3. 4. Problem Solving 5. Cross out the figures that are not congruent © Harcourt © Harcourt to the gray figure. PW85 Practice MXECA09AWK2X_PH_C14_L1.indd Page 19 7/31/09 2:26:50 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch14/MXECA09AWK2X_PH_C14_L1 Name Lesson 14.1 Equal Parts Write how many equal parts. Then write if these parts are halves, thirds, or fourths. 1. 2. 3 3. equal parts equal parts equal parts thirds 4. Which shapes are divided into halves? Color them red. 5. Which shapes are divided into fourths? Color them yellow. 6. Which shapes are not divided into equal parts? Draw an X on them. Problem Solving © Harcourt © Harcourt 7. Randy and three friends want to share a sandwich equally. Draw lines to show how the sandwich should be divided. PW86 Practice MXECA09AWK2X_PH_C14_L2.indd Page 19 7/17/09 5:38:01 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch14/MXECA09AWK2X_PH_C14_L2 Name Lesson 14.2 Unit Fractions Write how many equal parts there are. Write the fraction that names the shaded part. 1. of the whole is shaded equal parts 2. of the whole is shaded equal parts Color one part green. Write the fraction that names the green part. 3. 4. 5. 7. 8. 1 6 Problem Solving © Harcourt © Harcourt 6. 9. Cassie is making a quilt. She colors 1_ of the quilt 4 gray. Circle the picture that could be her quilt. PW87 Practice MXECA09AWK2X_PH_C14_L3.indd Page 19 7/17/09 5:38:19 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch14/MXECA09AWK2X_PH_C14_L3 Name Lesson 14.3 Compare Unit Fractions Color the fraction strips to show the fractions. Compare. Circle the greater fraction. 1. 1 _ 6 1 _ 3 2. 1 ___ 10 1 _ 2 3. 1 _ 4 1 ___ 12 4. 1 _ 8 1 _ 3 5. Maria has a slice of pizza that is _1 of the pizza. Ben © Harcourt © Harcourt Problem Solving 6 has a slice of pizza that is 1_3 of the pizza. Maria’s slice is bigger. Draw pizzas to show how this is possible. PW88 Practice MXECA09AWK2X_PH_C14_L4.indd Page 19 10/08/2009 20:15:03 elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch14/MXECA09AWK2X_PH_C14_L4 Name Lesson 14.4 Problem Solving Strategy: Make a Model Shade to make a model. Then solve. 1. Two banners are the same size. Mae paints _14 of one banner. Sally paints 1_ of the 6 other. Who paints more banner? banner 2. Two apples are the same size. Pauline eats _14 of one apple. Margie eats 1_ of the other. 3 Who eats more apple? apple 3. Two sandwiches are the same size. Bo eats _14 of one sandwich. Kate eats 1_ of 2 the other. Who eats more sandwich? 4. Two hot dogs are the same size. Amy eats 1_3 of one hot dog. Jane eats 1_ of the © Harcourt © Harcourt sandwich 6 other. Who eats more hot dog? hot dog PW89 Practice MXECA09AWK2X_PH_C14_L5.indd Page 19 7/17/09 5:38:45 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch14/MXECA09AWK2X_PH_C14_L5 Name Lesson 14.5 Other Fractions Write the fraction for the shaded part of the whole. 1. b b 2. 3. b b b b _ _ _ Color to show the fraction. 4. 7. 4 _ 8 _2 3 2 _ 6 5. 6. _1 2 8. 9. 3 _ 4 7 __ 10 Problem Solving 2 10. Jack colored _3 of his poster. © Harcourt © Harcourt Color the pictures to solve. Marin wants to color the same amount of her poster. How many parts of her poster should Marin color? Jack’s poster parts PW90 Marin’s poster Practice MXECA09AWK2X_PH_C14_L6.indd Page PW91 8/13/09 12:14:50 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch14/MXECA09AWK2X_PH_C14_L6 Name Lesson 14.6 Fractions Equal to 1 Count the equal parts. Write a fraction for the whole. 1. b b 2. b b _ = 1 whole _ = 1 whole Write a fraction for the shaded part. 3. b b b b 4. _ 5. b b b b _ 6. _ _ Problem Solving © Harcourt He cut one pizza into 3 equal parts. He cut the other pizza into 8 equal parts. Write a fraction for each whole pizza. b b b b _ _ PW91 Practice © Harcourt 7. Trent made 2 pizzas that are the same size. MXECA09AWK2X_PH_C14_L7.indd Page 19 8/13/09 12:33:08 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch14/MXECA09AWK2X_PH_C14_L7 Name Lesson 14.7 Fractions Greater Than 1 Write the fraction. 1. There are 7 children. Each child has _1 of a waffle. What 4 fraction names the amount of waffle the children have in all? 2. There are 7 children. Each child has _1 of a pizza. What 6 1 6 fraction names the amount of pizza the children have in all? 3. There are 5 children. Each child has 1_ of an apple. 3 1 4 1 4 1 4 1 4 1 4 1 4 1 6 1 6 1 6 1 6 1 3 What fraction names the amount of apple the children have in all? 1 6 1 3 1 4 1 6 _ _ 1 3 1 3 1 3 4. There are 9 children. Each child has 1_ of a melon. 1 6 1 6 1 6 6 What fraction names the amount of melon the children have in all? 1 6 1 6 1 6 1 6 7 b 4 b b b b b b b _ 1 6 1 6 _ Problem Solving same size. She divides each muffin into fourths. What fraction names the amount of muffin she has in all? b b _ PW92 © Harcourt © Harcourt 5. Ellie has 3 muffins that are the Practice MXECA09AWK2X_PH_C15_L1.indd Page 19 7/30/09 4:10:08 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch15/MXECA09AWK2X_PH_C15_L1 Name Lesson 15.1 Equal Parts of a Group Circle to show equal parts. Then write if the gray part is one half, third, or fourth of the group. 1. 2 equal parts One half group is gray. 2. 3 equal parts of the 3. 4 equal parts One group is gray. One group is gray. of the 4. 2 equal parts of the One group is gray. of the Problem Solving One fourth of her flowers are blue. Draw Cleo’s flowers. PW93 © Harcourt © Harcourt Harcourt 5. Cleo has 8 flowers. Practice MXECA09AWK2X_PH_C15_L2.indd Page 19 7/31/09 3:07:30 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch15/MXECA09AWK2X_PH_C15_L2 Name Lesson 15.2 Unit Fractions of a Group Circle to show equal parts. Color to show the fraction. 1. 2 equal parts 2. 3 equal parts 1 _ 2 1 _ 3 3. 5 equal parts 4. 4 equal parts 1 _ 5 1 _ 4 5. 6 equal parts 6. 12 equal parts 1 _ 6 1 ___ 12 7. Some marbles are in a sack. 1 _ of the marbles are green. © Harcourt © Harcourt Problem Solving 8 Draw a picture to show the marbles in the sack. PW94 Practice MXECA09AWK2X_PH_C15_L3.indd Page 19 7/30/09 4:10:28 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch15/MXECA09AWK2X_PH_C15_L3 Name Lesson 15.3 Other Fractions of a Group What fraction of the group are gray? What fraction of the group are black? 1. 2 _ of the group are gray. _ of the group are black. 3 2. _ of the group are gray. _ of the group are black. _ of the group are gray. _ of the group are black. 3. Problem Solving Draw a picture to solve, if you need to. 5. Mark has 2 blue blocks, 2 red 4 red buttons, and 4 blue buttons. What fraction of her buttons are green? blocks, 2 green blocks and 2 white blocks. What fraction of his blocks are not blue? _ of the buttons are green. _ of the blocks are not blue. PW95 Practice © Harcourt © Harcourt 4. Lydia has 4 green buttons, MXECA09AWK2X_PH_C15_L4.indd Page 19 7/30/09 4:11:02 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch15/MXECA09AWK2X_PH_C15_L4 Name Lesson 15.4 Problem Solving Strategy: Make a Model Shade the squares to make a model. Write is greater than or is less than. 1. Greg and Jeff each have 5 hats. _25 of Greg’s hats are gray. 4_ of Jeff’s 5 hats are gray. Who has more gray hats? 2 _ 5 4 _ is less than 5. Jeff has more gray hats. 2. Lucy and Alix each have 6 ribbons. _36 of Lucy’s ribbons are pink. 2_ of Alix’s 6 ribbons are pink. Who has more pink ribbons? 3 _ 6 2 _ 6. has more pink ribbons. 3. Cam and Bo each have 8 crayons. _58 of Cam’s crayons are red. 6_ of 8 Bo’s crayons are red. Who has more red crayons? 5 _ 8 6 _ 8. 4. Roy and Liz each have 5 grapes. _45 of Roy’s grapes are green. 3_ of © Harcourt © Harcourt has more red crayons. 5 Liz’s grapes are green. Who has more green grapes? 4 _ 5 3 _ 5. has more green grapes. PW96 Practice MXECA09AWK2X_PH_C16_L1.indd Page 19 7/17/09 5:53:02 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch16/MXECA09AWK2X_PH_C16_L1 Name Lesson 16.1 Hundreds REMEMBER: Write how many hundreds. Then write how many tens. Write the number. ⫽ 1 hundred ⫽ 10 tens 1. 40 4 — hundreds ⫽ — tens 400 — 2. — hundreds ⫽ — tens — 3. — hundreds ⫽ — tens — 4. — hundreds ⫽ — tens — 5. — hundreds ⫽ — tens — 6. Luis has 600 cubes. He 7. Nava has 30 sticks of 10 wants to make sticks of 10 cubes. How many can he make? cubes. How many cubes does she have in all? —sticks of 10 cubes PW97 — cubes Practice © Harcourt © Harcourt Problem Solving MXECA09AWK2X_PH_C16_L2.indd Page 19 7/17/09 6:09:59 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch16/MXECA09AWK2X_PH_C16_L2 Name Lesson 16.2 Hundreds, Tens, and Ones Write how many hundreds, tens, and ones. Then write the number. 1. hundreds tens ones 2 3 6 hundreds tens ones 236 — 2. — 3. hundreds tens ones — 4. hundreds tens ones — Problem Solving hundred. What number am I? — 6. I have 6 ones, 1 ten, and 4 hundreds. What number am I? — PW98 Practice © Harcourt © Harcourt 5. I have 8 ones, 3 tens, and 1 MXECA09AWK2X_PH_C16_L3.indd Page PW99 7/17/09 5:54:27 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch16/MXECA09AWK2X_PH_C16_L3 Name Lesson 16.3 Understand Place Value Circle the value of the gray digit. 426 1. 400 40 256 3. 2 20 300 200 30 3 800 80 900 10 90 9 4 40 90 200 800 20 2 380 11. 900 80 120 8. 689 9 8 400 100 518 5. 417 10. 8 1 795 7. 803 9. 4 4. 536 6. 617 2. 300 30 3 12. Dinah is making a Venn diagram. © Harcourt Where should she write the other numbers in the diagram? Numbers with a 3 in the Ones Place Numbers with a 6 in the Hundreds Place 153 PW99 153 649 673 783 613 602 Practice © Harcourt Problem Solving MXECA09AWK2X_PH_C16_L4.indd Page 19 7/17/09 5:56:05 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch16/MXECA09AWK2X_PH_C16_L4 Name Lesson 16.4 Read and Write 3-Digit Numbers Read the number. Write the number in different ways. three hundred fifty-six 1. 3 6 5 — hundreds — tens — ones 300 50 356 — 6 —⫹—⫹— 2. five hundred twenty-nine — hundreds — tens — ones —⫹—⫹— — Write the number another way. 3. nine hundred sixty-one 4. — 5. 581 — 600 ⫹ 70 ⫹ 5 6. — 4 hundreds 9 tens 0 ones — 7. Chloe has all of these blocks. © Harcourt © Harcourt Problem Solving Circle blocks that she could use to show four hundred seventeen. PW100 Practice MXECA09AWK2X_PH_C16_L5.indd Page 19 7/17/09 5:55:13 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch16/MXECA09AWK2X_PH_C16_L5 Name Lesson 16.5 Different Ways to Show Numbers Use . Write how many hundreds, tens, and ones. 1. 325 3 1 15 — hundreds — tens — ones — hundreds — tens — ones 2. 413 — hundreds — tens — ones — hundreds — tens — ones 3. 562 — hundreds — tens — ones — hundreds — tens — ones Problem Solving show 160? Circle them. © Harcourt © Harcourt 4. How many tens are needed to — tens PW101 Practice MXECA09AWK2X_PH_C16_L6.indd Page 1 7/17/09 5:55:47 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch16/MXECA09AWK2X_PH_C16_L6 Name Lesson 16.6 Skill • Make Reasonable Estimates Circle the better estimate. 1. Each one of Matt’s brothers about 10 socks and sisters is wearing 2 socks. About how many socks might they be wearing in all? about 100 socks sock 2. Eliza carries some books to about 6 books the library. About how many books might she be carrying? about 60 books book 3. There are 5 second grade about 1,000 children classes in Rajae’s school. About how many children might be in second grade? about 100 children children 4. Diana puts some oranges into about 8 oranges orange 5. Trent fills a jar with pennies. about 80 oranges about 30 pennies About how many pennies might be in the jar? penny PW102 about 300 pennies Practice © Harcourt © Harcourt a bag. About how many oranges might she put into the bag? MXECA09AWK2X_PH_C16_L7.indd Page 1 7/17/09 5:56:33 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch16/MXECA09AWK2X_PH_C16_L7 Name Lesson 16.7 Count Bills and Coins REMEMBER: Use a dollar sign ($) and a decimal point (.) to write money amounts. Count on. Write the amount. 1. Julio has 3 quarters, 1 nickel, and 1 penny. How much money does he have? HINT: If there are no dollars, write 0. $0.81 2. Van has 3 dollar bills, 3 dimes, and 2 pennies. How much money does he have? 3. Cassandra has 2 dollar bills, 2 quarters, and 1 dime. How much money does she have? 4. Jim made these price tags. Cross out the prices that have the $ or the ¢ in the wrong place. PW103 2.97$ $1.82 ¢63 30¢ Practice © Harcourt © Harcourt Problem Solving MXECA09AWK2X_PH_C16_L8.indd Page 1 7/17/09 5:56:46 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch16/MXECA09AWK2X_PH_C16_L8 Name Lesson 16.8 Strategy • Make a Model Use bills and coins to make a model. 1. Raji has 2 dollar bills, 1 quarter, 3 dimes, and 1 nickel. He wants to buy a ball that costs $1.35. Draw two ways that he can pay the exact amount. ball 2. Dakota has 2 dollar bills, 4 quarters, 2 dimes, and 1 nickel. She wants to buy a card that costs $2.75. Draw two ways she can pay the exact amount. card 3. Kiran has 3 dollar bills, 1 quarter, 4 dimes, and 2 kite © Harcourt © Harcourt nickels. She wants to buy a kite that costs $3.50. Draw two ways that she can pay the exact amount. PW104 Practice MXECA09AWK2X_PH_C17_L1.indd Page 19 7/17/09 6:13:32 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch17/MXECA09AWK2X_PH_C17_L1 Name Lesson 17.1 Algebra: Compare Numbers: >, <, or = REMEMBER: Compare the hundreds first. Write is greater than, is less than, or is equal to. Then write ⬎, ⬍, or ⫽. 2. is less than 321. 222 222 3. 331 5. 4. 131. 205 C 131 6. 140 C 216 C 143 210. — 205 216. 143. — 143 — 216 © Harcourt < 321 C — 331 216 143 — C 210 137. — 140 C 137 Problem Solving 7. There are 700 red flowers and 600 yellow flowers in the garden. Show how to compare the number of red and yellow flowers. — C — PW105 Practice © Harcourt 1. MXECA09AWK2X_PH_C17_L2.indd Page 19 7/17/09 5:58:01 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch17/MXECA09AWK2X_PH_C17_L2 Name Lesson 17.2 Use Place Value to Compare Numbers Compare. Write ⬎, ⬍, or ⫽. 1. < 875 C 298 C 298 319 C 991 793 C 739 2. 873 4. 7. 10. C 526 615 C 516 431 C 432 168 C 168 3. 426 5. 8. 11. C 703 304 C 334 818 C 818 329 C 239 730 6. 9. 12. Problem Solving Look at the pattern of shaded numbers. Use place value to describe how the numbers change. 501 502 503 504 505 506 507 508 509 510 14. 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 541 542 543 544 545 546 547 548 549 550 — — — — — — PW106 Practice © Harcourt © Harcourt 13. MXECA09AWK2X_PH_C17_L3.indd Page 19 10/08/2009 20:17:19 elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch17/MXECA09AWK2X_PH_C17_L3 Name Lesson 17.3 Compare Money Amounts Write each amount. Then write who has the greater amount. 1. Leah’s money Skip’s money Who has the greater amount? Tracy’s money Who has the greater amount? Quiana’s money Who has the greater amount? 2. Chuck’s money 3. C.J.’s money © Harcourt © Harcourt $1.20 4. Dylan has 1 dollar bill, 2 dimes, and 2 pennies. Beata has 5 quarters. Katie has 1 dollar bill and 4 nickels. Who has the least amount of money? PW107 Practice MXECA09AWK2X_PH_C17_L4.indd Page 19 7/17/09 5:58:30 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch17/MXECA09AWK2X_PH_C17_L4 Name Lesson 17.4 Order Numbers Compare the numbers. Write them in the correct order. Then write ⬎ or ⬍. 1. — C — C — C — C 303 < 313 < 315 least greatest — 2. least — greatest Write the numbers in the correct order. Then write ⬎ or ⬍ . 166 — 351 407 — — C C greatest 5. 873 — 972 C C — 274 740 6. 760 750 — — least C C 552 255 — least greatest © Harcourt 4. — — least least greatest C C — 525 — greatest © Harcourt 3. Problem Solving 7. Write a number in the box that will make this true. 141 ⬍ 8. b ⬍ 146 Write a number in the box that will make this true. 879 ⬍ PW108 b ⬍ 901 Practice MXECA09AWK2X_PH_C17_L5.indd Page 19 7/17/09 5:59:04 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch17/MXECA09AWK2X_PH_C17_L5 Name Lesson 17.5 Skill • Read a Table Use the table to answer the questions. 412 daisies 418 sunflowers 349 tulips 396 lilies 420 Compare. Are there more tulips or sunflowers in the garden? 2. C 396 > — 349 There are more tulips — in the garden. 3. — © Harcourt C — There are fewer — in the garden. — Of which flower are there the fewest in the garden? 4. ——— 5. Compare. Are there fewer daisies or roses in the garden? Of which flower are there the most in the garden? ——— Look at the number of lilies, tulips, and daisies. Write these numbers in order from greatest to least. — C — PW109 C — Practice © Harcourt 1. roses MXECA09AWK2X_PH_C18_L1.indd Page 19 7/17/09 5:41:42 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch18/MXECA09AWK2X_PH_C18_L1 Name Lesson 18.1 Mental Math: Add On Multiples of 100 Count on to add. 1. 432 ⫹ 300 ⫽ 3. 732 2. 345 ⫹ 200 ⫽ 218 ⫹ 500 ⫽ 4. 159 ⫹ 300 ⫽ 5. 439 ⫹ 200 ⫽ 6. 298 ⫹ 400 ⫽ 7. 371 ⫹ 300 ⫽ 8. 534 ⫹ 100 ⫽ 9. 659 ⫹ 200 ⫽ 10. 240 ⫹ 400 ⫽ 11. 175 ⫹ 300 ⫽ 12. 499 ⫹ 500 ⫽ Problem Solving 13. There are 162 books about cats in the library. There are 462 books about dogs in the library. How many more books about dogs than books about cats are in the library? more books about dogs PW110 © Harcourt © Harcourt book Practice MXECA09AWK2X_PH_C18_L2.indd Page 19 7/17/09 5:41:54 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch18/MXECA09AWK2X_PH_C18_L2 Name Lesson 18.2 Model 3-Digit Addition: Regroup Ones Use workmat 5 and 1. Hundreds Tens 1 B Ones 6 1 . Add. 2. Hundreds Tens B Ones 3. Hundreds Tens B Ones 5 2 4 5 1 6 3 1 9 1 3 7 ___ 3 4 8 4 2 3 ___ ___ 6 4. Hundreds Tens B Ones 5. Hundreds Tens B Ones 6. Hundreds Tens B Ones 3 4 8 4 6 5 6 2 7 6 4 1 1 1 7 2 5 9 ___ ___ ___ 7. Hundreds Tens B Ones 8. Hundreds Tens B Ones 9. Hundreds Tens B Ones 2 4 9 3 5 4 5 4 6 5 3 4 1 3 2 3 4 9 ___ ___ ___ Problem Solving 119 236 485 326 332 526 © Harcourt © Harcourt 10. Circle the pairs of addends that you would regroup ones when you add. 348 133 751 284 PW111 Practice MXECA09AWK2X_PH_C18_L3.indd Page PW112 7/17/09 5:42:05 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch18/MXECA09AWK2X_PH_C18_L3 Name Lesson 18.3 Model 3-Digit Addition: Regroup Tens Use workmat 5 and 1. Hundreds Tens 1 B B . Add. Ones 2. Hundreds Tens B B Ones 3. Hundreds Tens B B Ones 1 6 5 4 9 3 5 8 4 2 7 6 5 4 3 3 5 2 ___ ___ ___ 4. 7 6 9 Hundreds Tens Ones B B 5. Hundreds Tens B B Ones 6. Hundreds Tens B B Ones 5 7 2 6 3 1 1 6 7 2 6 3 1 7 5 3 7 4 ___ ___ ___ 7. Hundreds Tens Ones B B 8. Hundreds Tens B B Ones 9. Hundreds Tens BB Ones 1 2 4 2 6 3 3 3 5 4 9 5 2 8 1 4 9 6 ___ ___ ___ Problem Solving 10. Circle the problem that was solved correctly. Hundreds Tens 1 1 B B Ones if you need to. Hundreds Tens 1 B B Ones Hundreds Tens 1 BB Ones 1 5 8 4 5 2 2 8 9 3 7 1 ___ 2 9 6 3 5 3 ___ ___ 5 3 9 7 4 PW112 8 5 4 2 Practice © Harcourt © Harcourt Use Workmat 5 and MXECA09AWK2X_PH_C18_L4.indd Page 1 7/17/09 5:42:18 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch18/MXECA09AWK2X_PH_C18_L4 Name Lesson 18.4 Practice 3-Digit Addition Add. 1. 2. 1 218 325 _ 3. 641 78 _ 4. 278 15 _ 492 347 _ 543 5. 6. 856 8 _ 9. 7. 318 429 _ 10. 872 36 _ 13. 1 95 513 _ 11. 608 82 _ 14. 289 55 _ 8. 374 27 _ 12. 532 235 _ 15. 377 142 _ 795 67 _ 16. 817 4 _ 541 59 _ Problem Solving has double that many stickers. How many bear stickers do they have in all? © Harcourt © Harcourt 17. Chandra has 146 bear stickers. Daniela bear sticker bear stickers PW113 Practice MXECA09AWK2X_PH_C18_L5.indd Page PW114 7/17/09 5:42:30 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch18/MXECA09AWK2X_PH_C18_L5 Name Lesson 18.5 Estimate Sums Estimate. Then add. 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 360 370 380 390 400 1 1. 4. 200 380 400 _ 610 600 230 310 290 _ 7. 280 3. 220 _ 370 390 _ 8. 320 390 _ 5. 210 370 _ 2. 270 6. 320 _ 330 380 9. 230 _ 290 _ Problem Solving to add together. She estimated the sum to be about 500. Write two numbers that she might have chosen. 346 221 368 395 283 and PW114 Practice © Harcourt © Harcourt 10. Betsy chose two of these numbers MXECA09AWK2X_PH_C18_L6.indd Page 19 10/08/2009 20:18:01 elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch18/MXECA09AWK2X_PH_C18_L6 Name Lesson 18.6 Skill • Too Much Information Circle the information you need. Draw a line through the information you do not need. Solve. 1. There are 54 snow monkeys in the zoo. There are 38 lions and 79 gibbon monkeys in the zoo. How many monkeys are in the zoo? snow monkey 1 54 + 79 _ 133 133 monkeys 2. There are 129 small dolphin toys and 145 large dolphin toys in a toy store. There are 112 small tiger toys. How many dolphin toys are in the store? dolphin toy dolphin toys 3. There are 156 sheep sleeping in the meadow. There are 118 sheep playing and 135 sheep eating. How many sheep are sleeping or eating? sheep sheep Monday. She feeds 85 sea lions and 38 otters on Tuesday. How many animals does she feed on Tuesday? seal PW115 © Harcourt © Harcourt 4. A zoo worker feeds 92 seals on animals Practice MXECA09AWK2X_PH_C19_L1.indd Page 19 7/17/09 1:27:59 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch19/MXECA09AWK2X_PH_C19_L1 Name Lesson 19.1 Mental Math: Subtract Multiples of 100 THINK: How many hundreds should you count back? Count back to subtract. 1. 283 583 ⫺ 300 ⫽ — 2. 821 ⫺ 400 ⫽ — 3. 719 ⫺ 200 ⫽ — 4. 394 ⫺ 200 ⫽ — 5. 528 ⫺ 400 ⫽ — 6. 672 ⫺ 300 ⫽ — 7. 460 ⫺ 200 ⫽ — 8. 809 ⫺ 500 ⫽ — 9. 932 ⫺ 500 ⫽ — 10. 629 ⫺ 200 ⫽ — 11. 583 ⫺ 300 ⫽ — 12. 744 ⫺ 400 ⫽ — 13. 309 ⫺ 200 ⫽ — 14. 486 ⫺ 400 ⫽ — 15. Sari has 441 photographs. She gives some of the photographs to her sister. Now she has 141 photographs. How many photographs does Sari give to her sister? © Harcourt © Harcourt Problem Solving photograph — photographs PW116 Practice MXECA09AWK2X_PH_C19_L2.indd Page 1 7/17/09 1:28:05 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch19/MXECA09AWK2X_PH_C19_L2 Name Lesson 19.2 Hands On: Model 3-Digit Subtraction: Regroup Tens Use workmat 5 and 1. Hundreds Tens Ones B B B 7 12 . Subtract. 2. Hundreds Tens Ones B B B 4 8 2 7 9 3 2 3 5 5 6 7 ___ ___ 2 4 7 4. Hundreds Tens Ones B B B 5. Hundreds Tens Ones B B B 9 4 5 8 5 9 4 2 8 ___ 7 3 5 ___ 7. Hundreds Tens Ones B B B 8. Hundreds Tens Ones B B B 4 5 4 8 8 2 2 1 7 ___ 4 3 5 ___ 3. Hundreds Tens Ones B B B 5 9 1 3 2 4 ___ 6. Hundreds Tens Ones B B B 3 9 2 1 4 6 ___ 9. Hundreds Tens Ones B B B 5 4 8 2 2 9 ___ © Harcourt © Harcourt Problem Solving 10. Jill has some blue marbles and some red marbles. She has 139 red marbles. She has 284 marbles in all. Does she have more blue marbles or red marbles? PW117 marble Practice MXECA09AWK2X_PH_C19_L3.indd Page 1 7/17/09 1:27:31 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch19/MXECA09AWK2X_PH_C19_L3 Name Lesson 19.3 Hands On: Model 3-Digit Subtraction: Regroup Hundreds Use workmat 5 and 1. Hundreds Tens Ones 13 B 4 B B . Subtract. 2. Hundreds Tens Ones B B B 3. Hundreds Tens Ones B B B 5 7 7 4 8 4 9 / 3/ 6 1 8 4 ___ 2 8 1 4 7 7 ___ ___ 3 5 2 4. Hundreds Tens Ones B B B 5. Hundreds Tens Ones B B B 6. Hundreds Tens Ones B B B 9 8 6 9 5 8 5 4 7 7 9 5 ___ 6 9 7 2 6 2 ___ ___ 7. Hundreds Tens Ones B B B 8. Hundreds Tens Ones B B B 9. Hundreds Tens Ones B B B © Harcourt © Harcourt 8 2 5 8 1 5 6 6 3 1 3 2 ___ 6 4 3 ___ 3 7 1 ___ PW118 Practice MXECA09AWK2X_PH_C19_L4.indd Page PW119 7/17/09 1:27:43 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch19/MXECA09AWK2X_PH_C19_L4 Name Lesson 19.4 Practice 3-Digit Subtraction Subtract. 1. 4 14 754 ⴚ218 _ 2. 529 36 _ 3. 315 183 _ _ 4. 872 644 _ 53 6 5. 944 36 _ 6. 725 153 _ _ 7. 293 8 _ 8. 567 259 _ 9. 683 _ 51 _ 10. 417 283 _ 11. 359 27 _ 12. 495 68 _ 13. 456 172 _ _ 14. 339 42 _ 15. 972 448 _ 16. 784 559 _ Problem Solving first stop, 134 people get off the train. At the second stop, 46 people get off the train. How many people do not get off the train at the first or second stop? © Harcourt © Harcourt 17. There are 257 people on a train. At the people train PW119 Practice MXECA09AWK2X_PH_C19_L5.indd Page 19 7/30/09 3:58:30 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch19/MXECA09AWK2X_PH_C19_L5 Name Lesson 19.5 Add and Subtract Money Add or subtract to solve. 2 12 Maria has 3 dollar bills and 1 quarter. She spends $1.35. 1. $1.90. Now Maria has — $3 /.2/ 5 - $ 1.3 5 $ 1.9 0 2. Jana has $5.37. Her sister gives her 3 quarters. Now Jana has —. Brett has 2 dollar bills, one quarter, and 2 dimes. He borrows 55¢ from Tim. 3. Now Brett has —. Darla has 4 dollars and 3 dimes. She spends $1.12. 4. Problem Solving 5. Tara buys an apple and a peach. She gives the clerk 2 dollar bills. How much change does Tara get? Price List Name Price orange apple peach $0.40 $0.50 $0.65 ——— PW120 Practice © Harcourt © Harcourt Now Darla has —. MXECA09AWK2X_PH_C19_L6.indd Page 19 7/17/09 1:27:24 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch19/MXECA09AWK2X_PH_C19_L6 Name Lesson 19.6 Skill • Solve Multistep Problems Do one step at a time. Add or subtract. STEP 1 2. © Harcourt 3. 4. Cleo has $4.50. She buys a bracelet that costs $1.25 and a necklace that costs $2.45. How much money does she have left? bracelet 1 $ 1.2 5 + $ 2.45 $ 3.70 Kendra buys 2 cups of mango tea. Each cup costs $2.25. She also buys a snack that costs $1.75. How much does she spend in all? tea Darin and Jack each have $1.85. They buy a crepe to share for $2.50. How much money do they have together now? crepe — — — Colby has $6.55. She buys a beret that costs $4.70. How much more does she need to buy a scarf that costs $3.65? beret © Harcourt 1. STEP 2 — PW121 Practice MXECA09AWK2X_PH_C19_L7.indd Page 19 7/30/09 4:00:41 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch19/MXECA09AWK2X_PH_C19_L7 Name Lesson 19.7 Estimate Differences Estimate. Then subtract. 500 510 520 530 540 550 560 570 580 590 600 610 620 630 640 650 660 670 680 690 700 5 17 2. 3. 678 // 687 700 ⫺ 582 ⫺ 600 _ _ ⫺ 515 ⫺ 96 100 ⫺ 507 _ 4. 6. 5. 697 ⫺ 618 _ 691 ⫺ 7. 694 © Harcourt ⫺ 520 _ ⫺ ⫺ 568 _ ⫺ 9. 686 597 ⫺ ⫺ 685 8. ⫺ 512 _ 592 ⫺ 509 _ ⫺ ⫺ 502 _ ⫺ Problem Solving Use the number line above if you need to. 10. Alan made a subtraction problem with two of these numbers. He estimated the difference to be about 200. Which two numbers might he have used? and PW122 684 625 583 622 519 Practice © Harcourt 1. MXECA09AWK2X_PH_C20_L1.indd Page 19 8/13/09 12:25:51 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch20/MXECA09AWK2X_PH_C20_L1 Name Lesson 20.1 Skip-Count Equal Groups Draw equal groups. Skip-count to find how many in all. Write how many in all. 12 in all 1. 4 groups of 3 3 6 , 9 , 12 , in all 2. 3 groups of 2 , , in all 3. 5 groups of 3 , , , , in all 4. 3 groups of 6 , Problem Solving © Harcourt © Harcourt , Draw equal groups to solve. 5. Shayna has 3 baskets. There are 6 balls of yarn in each basket. How many balls of yarn are there in all? balls of yarn PW123 Practice MXECA09AWK2X_PH_C20_L2.indd Page 19 8/13/09 12:27:15 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch20/MXECA09AWK2X_PH_C20_L2 Name Lesson 20.2 Connect Addition to Multiplication Draw equal groups. Write the addition sentence. Write the multiplication sentence. 1. 4 groups of 3 4 3 12 3 3 3 3 12 2. 2 groups of 5 3. 5 groups of 2 Problem Solving Write a number sentence that matches each picture. Use multiplication if you can. © Harcourt 5. © Harcourt 4. PW124 Practice MXECA09AWK2X_PH_C20_L3.indd Page 19 7/17/09 12:19:58 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch20/MXECA09AWK2X_PH_C20_L3 Name Lesson 20.3 Algebra: Model with Arrays Use . Color the array to show how many. Write the multiplication sentence. 1. 5 rows of 3 2. 2 rows of 6 5 ⫻ 3 ⫽ 15 4. 6 rows of 4 ⫻ ⫻ 3. 3 rows of 6 ⫽ ⫻ 5. 3 rows of 3 ⫽ ⫻ ⫽ 6. 5 rows of 5 ⫽ ⫻ ⫽ Problem Solving 7. Make an array that shows a 8. Make a different array that is not a rectangle. Write the number sentence. © Harcourt © Harcourt rectangle. Write the number sentence. ⫻ ⫽ ⫻ PW125 ⫽ Practice MXECA09AWK2X_PH_C20_L4.indd Page 19 7/31/09 4:17:46 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch20/MXECA09AWK2X_PH_C20_L4 Name Lesson 20.4 Algebra: Multiply in Any Order Multiply in any order. The product is the same. Write how many. Write the multiplication sentence. 1. 2 rows of 4 ⫽ rows of ⫻ ⫽ rows of ⫻ ⫽ rows of ⫻ ⫽ ⫻ 2. Problem Solving 3. How many different arrays can you make with 12 ? © Harcourt © Harcourt Color the grids to show your work. ⫻ ⫽ ⫻ ⫽ ⫻ PW126 ⫽ ⫻ ⫽ Practice MXECA09AWK2X_PH_C20_L5.indd Page 19 7/30/09 2:34:42 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch20/MXECA09AWK2X_PH_C20_L5 Name Lesson 20.5 Problem Solving Strategy Practice: Write a Number Sentence Draw a picture to solve. Write a number sentence. 1. Mario has 7 boxes. He puts 2 erasers in each box. How many erasers are there in all? eraser erasers C C C C 2. There are 9 girls on the playground. There are 8 boys on the playground. How many children are on the playground? children © Harcourt Mixed Strategy Practice Choose a strategy to solve. 3. Jenna has 3 quarters, 2 nickels and 4 pennies. She buys some juice for 63¢. How much money does she have left? Choose a Strategy • Write a Number Sentence • Draw a Picture • Use Logical Reasoning © Harcourt children 4. Benson is thinking of a number. His number is even. It is greater than 16 and less than 20. What number is Benson thinking of? PW127 Practice MXECA09AWK2X_PH_C20_L6.indd Page 128 10/08/2009 20:19:17 elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch20/MXECA09AWK2X_PH_C20_L6 Name Lesson 20.6 Multiply with 2 Skip-count by twos to find the product. 1. 2. 82 3. 72 16 You can multiply in any order. The product is the same Write the product. 4. 5 2 _ 5. 2 4 _ 6. 2 7 _ 7. 2 3 _ 8. 6 2 _ 9. 3 2 _ 10. 2 6 _ 11. 2 8 _ 12. 2 5 _ 13. 2 9 _ 14. 2 7 _ 15. 4 2 _ 16. 6 2 6 2 _ _ 18. 5 2 5 _ 2 _ 17. 2 7 7 2 _ _ 19. 8 2 2 8 _ _ Problem Solving 20. Devorah has 2 baskets. She puts 6 shirts into each basket. How many shirts does she put in the baskets? shirt PW128 © Harcourt © Harcourt 92 shirts Practice MXECA09AWK2X_PH_C20_L7.indd Page 129 7/17/09 12:20:24 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch20/MXECA09AWK2X_PH_C20_L7 Name Lesson 20.7 Multiply with 5 Skip-count by fives to find the product. 1. 2. 75 35 3. 95 85 You can multiply in any order. The product is the same. Write the product. 4. 2 5 _ 5. 6 5 _ 6. 4 5 _ 7. 5 1 _ 8. 5 3 _ 9. 5 5 _ 10. 5 8 _ 11. 3 5 _ 12. 5 7 _ 13. 5 9 _ 14. 5 4 _ 15. 5 2 _ 16. 9 5 5 _ 9 _ 17. 6 5 18. 2 5 19. 5 7 7 _ 6 5 _ 5 2 5 _ _ _ _ 20. A pentagon has 5 vertices. A triangle has 3 vertices. Are there the same number of vertices in 5 triangles as there are in 3 pentagons? PW129 © Harcourt © Harcourt Problem Solving triangle pentagon Practice MXECA09AWK2X_PH_C20_L8.indd Page 130 7/31/09 4:28:44 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch20/MXECA09AWK2X_PH_C20_L8 Name Lesson 20.8 Multiply with 10 Skip-count by tens to find the product. 1. 3. 2. 5 rows of 10 7 rows of 10 6 rows of 10 5 10 50 7 10 6 10 Write the product. 4. 10. 10 4 _ 10 7 _ 5. 11. 6 10 _ 10 1 _ 6. 12. 5 10 _ 10 8 _ 7. 3 10 _ 13. 10 6 _ 8. 14. 4 10 _ 10 3 _ 9. 10 8 _ 15. 10 10 _ Problem Solving Write a multiplication sentence to tell how many cents in all. © Harcourt © Harcourt 16. cents PW130 Practice MXECA09AWK2X_PH_C20_L9.indd Page 131 7/17/09 12:22:19 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch20/MXECA09AWK2X_PH_C20_L9 Name Lesson 20.9 Use a Multiplication Table Use the multiplication table to find the product. 1. 5 4 _ 2. 7 2 _ 3. 10 3 _ X 7. 6 10 _ 5 9 _ 0 1 2 3 4 5 6 7 8 9 10 0 20 4. 1 2 5. 8. 8 5 _ 2 5 _ 6. 9. The product is found where the row and column meet. 2 3 _ 3 4 5 10 1 _ 2 5 10 2 4 6 8 10 12 14 16 18 20 6 15 30 8 20 40 5 10 15 20 25 30 35 40 45 50 6 12 30 60 7 14 35 70 8 16 40 80 9 18 45 90 10 10 20 30 40 50 60 70 80 90 10. 6 5 _ 11. 2 10 _ 12. 6 2 _ 13. 5 5 _ 14. 10 4 _ 15. 10 8 _ 16. 5 10 _ 17. 7 5 _ 18. 9 2 _ 19. 2 8 _ 20. 7 10 _ 21. 5 3 _ Problem Solving Write a multiplication sentence to tell how many water bottles there are in all. © Harcourt © Harcourt 22. water bottles PW131 Practice MXECA09AWK2X_PH_C21_L1.indd Page 157 7/31/09 4:32:39 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch21/MXECA09AWK2X_PH_C21_L1 Name Lesson 21.1 Size of Shares Use Workmat 6 and . Draw to show your work. Write how many in each group. 1. Divide 12 into 3 equal 2. Divide 8 groups. groups. in each group 3. Divide 10 into 2 equal in each group 4. Divide 14 groups. groups. in each group 5. Divide 18 into 2 equal into 3 equal in each group 6. Divide 15 groups. into 5 equal groups. in each group © Harcourt 4 into 4 equal in each group Problem Solving 7. Mr. Carr divides 6 meatballs into 3 bowls. He wants to have 3 meatballs in each bowl. How many more meatballs does he need? more meatballs PW132 Practice MXECA09AWK2X_PH_C21_L2.indd Page 158 7/16/09 11:31:16 PM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch21/MXECA09AWK2X_PH_C21_L2 Name Lesson 21.2 Number of Equal Shares Use . Draw to show your work. Write how many equal groups. 1. Divide 8 into groups of 2. 4 2. Divide 15 groups into groups of 5. groups 3. Divide 14 into groups of 2. groups 4. Divide 20 into groups of 4. groups Problem Solving Use . Draw to show your work. © Harcourt 5. Mrs. Rodriguez takes 5 children to the fair. She has $12. She wants to give each child some money for rides. Can she give each child $3? PW133 Practice MXECA09AWK2X_PH_C21_L3.indd Page 134 7/16/09 11:31:29 PM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch21/MXECA09AWK2X_PH_C21_L3 Name Lesson 21.3 Equal Shares with Remainders Use Workmat 6 and . Draw to show your work. Write how many groups and the remainder. 1. Divide 10 into groups of 4. 2 remainder 3. Divide 12 2. Divide 13 into groups of 3. groups groups 2 remainder into groups of 6. 4. Divide 15 into groups of 4. groups remainder groups remainder © Harcourt Problem Solving 5. Barry has 11 toy cars. He gives some of his friends 3 cars each. He has 2 cars left over. How many friends get cars? friends PW134 Practice MXECA09AWK2X_PH_C21_L4.indd Page 135 7/16/09 11:30:49 PM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch21/MXECA09AWK2X_PH_C21_L4 Name Lesson 21.4 Connect Subtraction to Division Use a number line. Count back by equal groups. Write how many times you subtracted. 1. Divide 10 into equal groups of 2. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 14 ⫼ 7 ⫽ 2. Divide 14 into equal groups of 7. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 3. Divide 18 into equal groups of 6. 0 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 18 ⫼ 6 ⫽ 9 10 11 12 13 14 15 16 17 18 4. Divide 12 into equal groups of 3. 0 5 10 ⫼ 2 ⫽ 12 ⫼ 3 ⫽ 9 10 11 12 13 14 15 16 17 18 Write a number sentence to show your answer. 5. A ribbon is 15 feet long. Mr. Yates cuts pieces that are 3 feet long to give to some children. How many children get pieces of the ribbon? © Harcourt © Harcourt Problem Solving ⫼ ⫽ children PW135 Practice MXECA09AWK2X_PH_C21_L5.indd Page 136 7/16/09 11:30:59 PM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch21/MXECA09AWK2X_PH_C21_L5 Name Lesson 21.5 Strategy • Write a Number Sentence Draw a picture to solve. Then write a number sentence. 1. There are 16 children in Mrs. McGraw’s class. They form 2 lines, with the same number in each line. How many children are in each line? 8 children child 16 2. Zoe has 12 pennies. She puts @ C 2 = C 8 them in equal stacks. There are 3 pennies in each stack. How many stacks does she make? penny 3. Benny plants 18 seeds in rows. He plants 6 seeds in each row. How many rows of seeds does he plant? © Harcourt rows seed 4. Kai has 15 baseball cards. He puts his cards into 5 equal groups. How many baseball cards are in each group? baseball cards baseball card PW136 C C C C C C © Harcourt stacks Practice MXECA09AWK2X_PH_C22_L1.indd Page 19 7/16/09 11:25:11 PM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch22/MXECA09AWK2X_PH_C22_L1 Name Lesson 22.1 Measure Length with Nonstandard Units Use . Measure the real object. Find the object. Measure. pencil 1. about cubes about cubes about cubes about cubes folder 2. tape 3. glue 4. Choose two objects. Estimate the length of each by comparing them to the objects you have just measured. 5. Object: 6. Object: Estimate: about cubes Estimate: about cubes Measure: about cubes Measure: about cubes PW137 Practice © Harcourt © Harcourt Problem Solving MXECA09AWK2X_PH_C22_L2.indd Page 19 7/16/09 11:24:33 PM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch22/MXECA09AWK2X_PH_C22_L2 Name Lesson 22.2 Compare Nonstandard Units Units of Measure Measure the length of the real object with paper clips and with straws. paper clip straw desk 1. about paper clips about straws about paper clips about straws about paper clips about straws book 2. doorway 3. 4. This rope is about 12 beads long. © Harcourt © Harcourt Problem Solving About how many paper clips long is the rope? about PW138 paper clips Practice MXECA09AWK2X_PH_C22_L3.indd Page 19 10/08/2009 20:19:44 elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch22/MXECA09AWK2X_PH_C22_L3 Name Lesson Lesson 22.3 17.2 Measure to the Nearest Inch REMEMBER: Line up one end of the object with the zero mark on the ruler. Measure the length to the nearest inch. 1. Measure: about inches Measure: about inches Measure: about inches Measure: about inches 2. 3. 4. Problem Solving 5. Use the 1-inch mark. Estimate the length of each ribbon. © Harcourt © Harcourt 1 inch Estimates: black ribbon: about white ribbon: about PW111 PW139 National inches inches Practice MXECA09AWK2X_PH_C22_L4.indd Page 19 7/16/09 11:24:12 PM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch22/MXECA09AWK2X_PH_C22_L4 Name Lesson 22.4 Problem Solving Skill: Make Reasonable Estimates 1. The toy train is about 6 inches long. Circle the best estimate for the length of the toy car. 1 inch 3 inches 4 inches 2. The leaf is about 4 inches long. Circle the best estimate for the length of the bug. 1 inch 2 inches 4 inches 3. The string is about 3 inches long. Circle the best estimate for the length of the bracelet. 5 inches 7 inches 4. The yarn is about 2 inches long. Circle © Harcourt © Harcourt 3 inches the best estimate for the length of the craft stick. 3 inches 4 inches 6 inches PW140 Practice MXECA09AWK2X_PH_C22_L5.indd Page 19 7/16/09 11:24:20 PM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch22/MXECA09AWK2X_PH_C22_L5 Name Lesson Lesson22.5 8.3 Measure in Inches and Feet Measure in inches. Then measure in feet. Find the real object. Measure. bulletin board 1. about inches about feet about inches about feet teacher’s desk 2. Circle the better estimate. 3. stapler 4. poster about 7 inches about 3 inches about 7 feet about 3 feet 6. chalk 5. desk about 2 feet about 4 feet about 2 inches about 4 inches Circle the best estimate. 7. About how long is a pencil? © Harcourt © Harcourt Problem Solving 8. About how tall is a door? about 6 inches about 17 feet about 16 inches about 7 feet about 6 feet about 7 inches PW141 Practice MXECA09AWK2X_PH_C22_L6.indd Page 1 8/13/09 12:30:22 AM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch22/MXECA09AWK2X_PH_C22_L6 Name Lesson Lesson 22.6 17.5 Measure to the Nearest Centimeter Measure the length to the nearest centimeter. 1. Measure: about centimeters Measure: about centimeters Measure: about centimeters Measure: about centimeters 2. 3. 4. Problem Solving 5. About how much longer is the 6. If you put the marker and the pencil than the craft stick? chalk end to end, about how many centimeters long would they be together? centimeters longer PW142 National centimeters Practice © Harcourt © Harcourt Use your measurements above to solve. MXECA09AWK2X_PH_C23_L1.indd Page 143 7/16/09 11:22:57 PM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch23/MXECA09AWK2X_PH_C23_L1 Name Lesson 23.1 Hands On: Ounces and Pounds Find the object. 1. Choose the unit. Measure. pencil ounce about — — pound 2. dictionary ounce about — — pound 3. backpack ounce about — — pound 4. eraser ounce about — — pound © Harcourt 5. Find a pair of boots. Measure the weight of the boots in ounces and in pounds. 6. Find a set of dominoes. Measure the weight of the set of dominoes in ounces and in pounds. — ounces — ounces. — pounds — pounds. PW143 Practice © Harcourt Problem Solving MXECA09AWK2X_PH_C23_L2.indd Page 144 7/30/09 3:00:14 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch23/MXECA09AWK2X_PH_C23_L2 Name Lesson 23.2 Hands On: Grams and Kilograms Find the object. 1. Choose the unit. Measure. jumprope gram about — — kilogram 2. encyclopedia gram about — — kilogram 3. rubber band gram about — — kilogram 4. geoboard gram about — — kilogram 5. One nickel has a mass of about 5 grams. Marshall has some nickels in his pocket that equal 20¢. Which is the better estimate of the mass of his coins? Circle it. about 10 grams © Harcourt © Harcourt Problem Solving about 20 grams PW144 Practice MXECA09AWK2X_PH_C23_L3.indd Page 145 7/30/09 3:00:24 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch23/MXECA09AWK2X_PH_C23_L3 Name Lesson 23.3 Hands On: Cups, Pints, Quarts, and Gallons Circle the better unit of measure for the capacity of the container. 1. juice glass 2. cup gallon milk carton 3. gallon gallon pint cup pint pitcher 4. thermos 5. bathtub cup aquarium 6. quart quart gallon quart Problem Solving Circle the better answer. Abby is using a 1 cup container to fill the vase with water. The vase holds 8 cups. She will only fill the vase halfway. How much water will be in the vase when Abby is finished? about 1 pint © Harcourt © Harcourt 7. about 1 quart PW145 Practice MXECA09AWK2X_PH_C23_L4.indd Page 146 7/30/09 3:01:45 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch23/MXECA09AWK2X_PH_C23_L4 Name Lesson 23.4 Hands On: Liters Estimate how much the container can hold. Circle more than 1 liter or less than 1 liter. ladle 1. 2. bucket 3. measuring cup more than 1 liter more than 1 liter more than 1 liter less than 1 liter less than 1 liter less than 1 liter soap bottle 4. 5. soup can 6. sink more than 1 liter more than 1 liter more than 1 liter less than 1 liter less than 1 liter less than 1 liter Problem Solving Think about some containers in your classroom. What container might hold more than 1 liter? Draw and label the container. © Harcourt © Harcourt 7. — PW146 Practice MXECA09AWK2X_PH_C23_L5.indd Page 147 7/16/09 11:22:40 PM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch23/MXECA09AWK2X_PH_C23_L5 Name Lesson 23.5 Skill • Make Reasonable Estimates Circle the better estimate. 1. Fiona is pouring a glass of milk. About how much milk might she pour? about 2 cups about 20 cups 3. 4. © Harcourt 5. Charlie is holding a basketball. What might the weight of the basketball be? about 1 ounce about 1 pound Molly wants to fill the bathtub with water. About how much water might it hold? about 1 liter about 50 liters Henry picks up his trumpet to begin playing. What might the mass of the trumpet be? about 2 grams about 2 kilograms Adele makes a pitcher of fruit punch for her friends. About how much might the pitcher hold? about 2 quarts about 20 quarts PW147 Practice © Harcourt 2. MXECA09AWK2X_PH_C24_L1.indd Page 19 7/16/09 11:20:43 PM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch24/MXECA09AWK2X_PH_C24_L1 Name Lesson 24.1 Explore 1 Minute About how long will it take? Circle the better choice. 1. walk the dog more than 1 minute less than 1 minute 2. kick a ball more than 1 minute less than 1 minute 3. snap your fingers more than 1 minute less than 1 minute 4. eat lunch more than 1 minute less than 1 minute Problem Solving 6. Izzy solves 1 math problem in seconds. Jill drinks her juice in 1 minute. Who takes less time to drink her juice? 10 seconds. She wants to solve 5 math problems. Will this take more than or less than 1 minute? PW148 Practice © Harcourt © Harcourt 5. Lexie drinks her juice in 30 MXECA09AWK2X_PH_C24_L2.indd Page PW82 7/16/09 11:19:42 PM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch24/MXECA09AWK2X_PH_C24_L2 Name Lesson 24.2 Time to 15 Minutes REMEMBER: Count by fives. Write the time in two ways. 1. 2. 11 12 1 2 10 9 3 4 8 7 6 5 11 12 1 2 10 9 3 4 8 7 6 5 1 : 30 30 3. minutes after : 1 o’clock minutes after 4. 11 12 1 2 10 9 3 4 8 7 6 5 11 12 1 2 10 9 3 4 8 7 6 5 : minutes after o’clock : o’clock minutes after o’clock Problem Solving © Harcourt 5. 11 12 1 2 10 9 3 4 8 7 6 5 : 6. 11 12 1 2 10 9 3 4 8 7 6 5 : PW149 7. 11 12 1 2 10 9 3 4 8 7 6 5 : Practice © Harcourt Look at where the hour hand is pointing. About what time is it? MXECA09AWK2X_PH_C24_L3.indd Page PW83 7/16/09 11:19:34 PM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch24/MXECA09AWK2X_PH_C24_L3 Name Lesson 24.3 Time to 5 Minutes 11 12 1 2 10 9 3 4 8 7 6 5 Use a to show the time. Then draw the minute hand. 1. 2. 3:25 : 11 12 1 2 10 9 3 4 8 7 6 5 10:10 3. 11 12 1 2 10 9 3 4 8 7 6 5 4. 5. 8:40 11 12 1 2 10 9 3 4 8 7 6 5 6. 11:05 11 12 1 2 10 9 3 4 8 7 6 5 1 2 : 55 11 12 1 2 10 9 3 4 8 7 6 5 9:35 11 12 1 2 10 9 3 4 8 7 6 5 Problem Solving the 2 and the 3. My minute hand points to the 4. What time do I show? : : PW150 11 12 1 2 10 9 3 4 8 7 6 5 Practice © Harcourt © Harcourt 7. My hour hand points between MXECA09AWK2X_PH_C24_L4.indd Page PW84 7/31/09 4:35:41 AM s-080 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch24/MXECA09AWK2X_PH_C24_L4 Name Lesson 24.4 Time Before the Hour Write the time in two ways. 1. 45 minutes after 6 11 12 1 2 10 9 3 4 8 7 6 5 2. 11 12 1 2 10 9 3 4 8 7 6 5 : minutes before 11 12 1 2 10 9 3 4 8 7 6 5 : minutes before 35 minutes after 9 3. 50 minutes after 2 4. 55 minutes after 5 11 12 1 2 10 9 3 4 8 7 6 5 : minutes before : minutes before Problem Solving Deb gets home from school at 45 minutes after 3. Jack gets home from school at 10 minutes before 4. Which classmate gets home from school first? — PW151 Draw hands on the clocks to show the times. 11 12 1 2 10 9 3 4 8 7 6 5 11 12 1 2 10 9 3 4 8 7 6 5 Deb gets home from school. Jack gets home from school. Practice © Harcourt © Harcourt 5. MXECA09AWK2X_PH_C24_L5.indd Page PW86 7/16/09 11:20:06 PM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch24/MXECA09AWK2X_PH_C24_L5 Name Lesson 24.5 A.M. and P.M. Write the time. Then circle A.M. or P.M. 1. make breakfast 2. do homework 11 12 1 2 10 9 3 4 8 7 6 5 11 12 1 2 10 9 3 4 8 7 6 5 : A.M. : P.M. 3. play soccer P.M. 4. get ready for school 11 12 1 2 10 9 3 4 8 7 6 5 : A.M. 11 12 1 2 10 9 3 4 8 7 6 5 A.M. : P.M. A.M. P.M. Problem Solving 5. breakfast 7:30 lunch 1:00 art 9:15 hiking 1:45 swimming 11:00 music 3:30 PW152 © Harcourt © Harcourt Look at Jeffrey’s camp schedule. For each time, write A.M. or P.M. Practice MXECA09AWK2X_PH_C24_L6.indd Page 19 10/08/2009 20:21:11 elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch24/MXECA09AWK2X_PH_C24_L6 Name Lesson 24.6 Elapsed Time REMEMBER: The minute hand moves around the clock once in 1 hour. 11 12 1 2 10 9 3 4 8 7 6 5 Use a . Write how much time has passed. 1. 2. 3. Start Finish 11 12 1 2 10 9 3 4 8 7 6 5 11 12 1 2 10 9 3 4 8 7 6 5 4:00 P.M. 6:00 P.M. Start Finish 11 12 1 2 10 9 3 4 8 7 6 5 11 12 1 2 10 9 3 4 8 7 6 5 1:00 A.M. 5:00 A.M. Start Finish 11 12 1 2 10 9 3 4 8 7 6 5 11 12 1 2 10 9 3 4 8 7 6 5 9:00 A.M. 2:00 P.M. Write and show the times. Then circle A.M. or P.M. Start 4. Wesley starts reading at 6:15 P .M. He reads for 2 hours. At what time does he stop reading? : A.M. P.M. PW153 11 12 1 2 10 9 3 4 8 7 6 5 Finish 11 12 1 2 10 9 3 4 8 7 6 5 Practice © Harcourt © Harcourt Problem Solving MXECA09AWK2X_PH_C24_L7.indd Page 19 7/16/09 11:19:12 PM elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch24/MXECA09AWK2X_PH_C24_L7 Name Lesson 24.7 Skill • Use a Table Use the table to answer the questions. You may wish to use a . 11 12 1 2 10 9 3 4 8 7 6 5 Event bus ride Museum Trip Schedule Start Finish 8:00 A.M. 10:00 A.M. tour 10:00 A.M. 1:00 P.M. lunch 1:00 P.M. 2:00 P.M. gift shop 2:00 P.M. 3:00 P.M. 1. Byron’s class is going to the art museum. How long will it take to get there? 2 hours 2. Mrs. Cole wants to buy some posters at the gift shop. How long will she have to pick them out? 3. Samantha wants to go on the museum tour. How long will the tour last? home. How long will she have to eat it? © Harcourt © Harcourt 4. Bridget brought her lunch from 5. Max wants to buy some lunch and a toy at the gift shop. How long will he have to do both? PW154 Practice MXECA09AWK2X_PH_C24_L8.indd Page 19 10/08/2009 20:22:27 elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Ch24/MXECA09AWK2X_PH_C24_L8 Name Lesson 24.8 Days, Weeks, Months, and Years Write more than, less than, or the same as to complete the sentence. Time Relationships There are 24 hours in 1 day. There are 7 days in 1 week. There are about 4 weeks in 1 month. There are 12 months in 1 year. There are about 52 weeks in 1 year. 1. Paige’s grandmother visited for 9 days. This is 1 week. 2. Mia’s mom was away for 36 hours. This is 1 day. 3. It took Josh 3 weeks to read his book. This is 1 month. 4. Ali’s little sister is 16 months old. This is 1 year. 5. Marley was at camp for 6. Ben collected baseball cards 5 weeks. Kate was at camp for one month. Who was at camp for a greater amount of time? PW155 for 1 year. Ethan collected baseball cards for 54 weeks. Who collected baseball cards for a greater amount of time? Practice © Harcourt © Harcourt Problem Solving MXECA09AWK_SR_FM.indd Page 1 12/08/2009 20:16:26 elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK_SR_FM CALIFORNIA HSP SPIRAL REVIEW MXECA09AWK_SR_FM.indd Page 2 12/08/2009 20:16:27 elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK_SR_FM MXECA09AWK2X_SR_WK1.indd Page SR1 7/17/09 5:12:58 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK1 Name Week 1 Spiral Review Write the sum or difference. Write the numbers in the fact family. 1. 8+7⫽ 15 – 7 ⫽ 7+8⫽ 15 – 8 ⫽ Circle the pattern unit. 2. Circle add or subtract. Write the number sentence. Use a . Show the time. Write the time. 11 12 1 2 10 9 3 4 8 7 6 5 3. 5. Jack has 12 bananas. He eats 4 of them. How many are there now? 11 12 1 2 10 9 3 4 8 7 6 5 bananas add subtract : 11 12 1 2 10 9 3 4 8 7 6 5 6. Alice has 6 cherries. Todd brings 7 more. How many are there now? cherries add : SR1 subtract Spiral Review © Harcourt © Harcourt 4. MXECA09AWK2X_SR_WK2.indd Page SR2 7/17/09 5:13:17 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK2 Name Week 2 Spiral Review Follow the rule. Complete the table. Write the sum. Rule: Add 6. 1. In 2. 5 3 ⫹7 3. 2 6 ⫹9 4. 2 7 ⫹8 5. 3 4 ⫹7 Out 2 3 4 5 Write A, B, or C to show which group each figure belongs. 6. 7. A B C 8. Circle the object you could trace to make each figure. © Harcourt © Harcourt 9. 10. SR2 Spiral Review MXECA09AWK2X_SR_WK3.indd Page SR3 7/30/09 11:35:01 PM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK3 Name Week 3 Spiral Review Complete the fact families. 1. + 6 7 + – Sports We Like Total Basketball 5 Football 7 Baseball 3 Use the real object and Estimate. Then measure. – Use the tally chart to answer the questions. 2. How many children chose football? children 3. Which sport did the fewest children choose? . Object Estimate Measurement 4. about © Harcourt © Harcourt about Count back to find the difference. 5. 5 2 6. 9 1 7. SR3 7 2 8. 6 3 Spiral Review MXECA09AWK2X_SR_WK4.indd Page SR4 7/30/09 11:44:38 PM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK4 Name Week 4 Spiral Review Make groups of ten. Use Workmat 3 and . Write how many tens and ones. Then write the number. Use plane figures. Make a tally chart to solve. 1. Total Plane Figures 2 tens ones 2. How many more circles are there than squares? more Use the solid. Write the number of flat surfaces and corners. 3. A cube has flat surfaces. 4. A cube has corners. © Harcourt © Harcourt Decide which operation to use. Then write the number sentence. Solve. 5. Jeremy has 8 crayons. He gives 3 crayons to Natalie. How many crayons does Jeremy have now? crayons SR4 Spiral Review MXECA09AWK2X_SR_WK5.indd Page SR5 7/17/09 5:25:26 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK5 Name Week 5 Spiral Review Write is greater than, is less than, or is equal to. Then write >, <, or =. 1. 47 63. 47 2. 28 23. 63 28 23 Find the pattern. Complete the table to solve. 3. How many wheels are on 5 cars? number of cars number of wheels There are 1 2 3 4 4 8 12 5 There are wheels on each car. wheels on 5 cars. and the real object. Choose a unit to measure. Use Draw it. Estimate. Then measure. 4. Object Unit Estimate about Draw a picture of the problem. Write the number sentence. Solve. 5. Neil bakes 12 muffins. He gives 4 of them away. How many muffins does Neil have left? © Harcourt © Harcourt about Measurement SR5 Spiral Review MXECA09AWK2X_SR_WK6.indd Page 1 7/30/09 11:46:14 PM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK6 Name Week 6 Spiral Review Write two ways to describe the meaning of the number. Skip-count. Show the pattern on the hundred chart. 1. 2. Count by twos. Color the squares red. 3. Count by fives. 56 56 Circle the numbers. tens ones 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 ⫹ 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 Circle each cylinder. 4. 5. © Harcourt © Harcourt Use Workmat 11 and . If you can make a ten, regroup. Write how many tens and ones. Write the sum. Add 34 and 9. Workmat Tens Ones tens SR6 ones Spiral Review MXECA09AWK2X_SR_WK7.indd Page SR7 7/17/09 11:56:20 PM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK7 Name Week 7 Spiral Review Add. Regroup if you need to. 1. 3. 13 + 28 2. 79 + 11 4. Use cubes to show the number as tens and ones. Draw what you built. Write even or odd. 25 + 31 5. 36 66 + 15 Cross off figures that do not match the clues. Circle the figure that is left. 6. This figure has straight sides. It has more than 3 sides. It has 4 corners. Which is the figure? 7. I have no curves. Find the sums. 8. 4+7= 7+4= 9. =0+4 =0+7 SR7 10. 8 +5= 8+6= Spiral Review © Harcourt © Harcourt I have more than 5 corners. My sides are not all the same. Which figure am I? MXECA09AWK2X_SR_WK8.indd Page SR8 7/17/09 5:26:00 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK8 Name Week 8 Spiral Review Break apart the addends. Find the sum. 1. 28 64 ? Add the tens. Add the ones. How many in all? So, 28 64 . Skip-count. Write the missing numbers. Write a rule for the pattern. 2. 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 19, 23, 27, , Rule: Count by . Cross out the paintings that do not match the clues. Circle the answer. 3. Sam paints a circle above a Use the table to solve. Points Scored in the Game Player Number of Points Kim Terence Joe 4. How many points did Kim and Terence score in all? 16 15 27 points SR8 Spiral Review © Harcourt © Harcourt square. He paints a triangle to the left of the circle. Which painting is Sam’s? MXECA09AWK2X_SR_WK9.indd Page SR9 7/17/09 11:57:01 PM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK9 Name Week 9 Spiral Review Subtract. Add to check. 1. 42 8 Use cubes to show the number as tens and ones. Draw what you built. Write even or odd. 27 2. Circle every shape that makes the statement true. 3. The is to the left of the 4. The is above the . . Use the table to solve. Color Number of Crayons red 32 blue 47 green 28 yellow 19 5. Alex takes 15 red crayons out of the box. How many red crayons are still in the box? red crayons SR9 Spiral Review © Harcourt © Harcourt Crayons in a Box MXECA09AWK2X_SR_WK10.indd Page SR10 7/17/09 5:26:23 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK10 Name Week 10 Spiral Review Look at the difference in the box. Write ⬎ or ⬍ to make each sentence true. 1. 60 ⫺ 20 ⫽ 40 50 ⫺ 30 ⫽ 20 2. 60 ⫺ 17 40 50 ⫺ 34 20 60 ⫺ 22 40 50 ⫺ 31 20 3. Use the picture to complete the table. Then shade bars in the graph to show the data Figures Figures Figure Number circle square Number 6 5 4 3 2 triangle 1 0 Circle Triangle Square Figure Use solids. Follow the rule. Complete the table. 4. Circle each solid with both Rule: Add 4 In Out 3 5 7 9 SR10 Spiral Review © Harcourt 5. © Harcourt curves and flat surfaces. MXECA09AWK2X_SR_WK11.indd Page SR11 7/17/09 5:26:34 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK11 Name Week 11 Spiral Review Draw and label coins from greatest to least value. Find the total value. 1. Use the pictograph. Use a . Show the time. Write the time. 11 12 1 2 10 9 3 4 8 7 6 5 Our Favorite Sports soccer 3. football hockey Key: Each 11 12 1 2 10 9 3 4 8 7 6 5 stands for 2 children. 2. How many children did not choose hockey? children Find the difference. Complete the addition fact that can help. 4. 14 – 9 = 5. + = 14 THINK: 6 + = 13 © Harcourt © Harcourt 14 THINK: 9 13 – 6 = 13 SR11 Spiral Review MXECA09AWK2X_SR_WK12.indd Page SR12 7/17/09 5:26:45 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK12 Name Week 12 Spiral Review Find the total value. 1. , , Use the line plot. 2 , , , 2. What number of 3 4 5 6 Number of Crayons crayons do the most children have? 7 crayons Order 3 pieces of chalk from longest to shortest. Draw them. 3. longest 4. 5. shortest Flowers in a Garden Flower Number pansy 28 iris 19 rose 41 lily 16 6. How many more roses © Harcourt © Harcourt Use the table to solve. than irises are in the garden? more roses SR12 Spiral Review MXECA09AWK2X_SR_WK13.indd Page 1 7/17/09 5:26:58 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK13 Name Week 13 Spiral Review Circle coins to make $1.00. Cross out the coins you do not use. 1. Use the bar graph. 2. How many books did Children Books Read Last Month the children read in all? Crystal John Neil books Maria 0 1 2 3 4 5 6 7 8 9 Number of Books Cross out the objects that do not belong. Circle the objects that have the same figure. Name the solid figures you circled. 3. Points Scored in the Tournament Team Number of Points Wildcats 32 Wolves 28 Sparrows 24 Eagles 36 SR13 4. How many more points did the Wildcats score than the Sparrows? more points Spiral Review © Harcourt © Harcourt Use the table to solve. MXECA09AWK2X_SR_WK14.indd Page 1 7/17/09 5:27:09 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK14 Name Week 14 Spiral Review Write how many tens and ones. Use if you need to. 1. 33 tens ones tens ones tens ones Find the pattern. Complete the table to solve. 2. How many wheels are on 5 skateboards? number of skateboards number of wheels There are 1 4 2 8 3 12 4 5 There are wheels on each skateboard. wheels on 5 skateboards. Complete the table to solve. 3. Daniel is making three cubes. How many squares does he need to make these three figures? 1 number of cubes 2 3 Daniel needs © Harcourt © Harcourt number of squares squares. Draw a picture to solve. Write the number sentence. 4. Becky sees 3 green butterflies and 4 purple butterflies. How many butterflies does Becky see altogether? SR14 butterflies Spiral Review MXECA09AWK2X_SR_WK15.indd Page SR15 7/17/09 5:27:23 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK15 Name Week 15 Spiral Review Write the fraction for the shaded part of the whole. 1. 2. Use the picture to compete the table. Then shade bars in the graph to show the data. Cars Color Number black gray white Number of Cars Cars 3. 6 5 4 3 2 1 0 Black Gray White Color Color the figures. 4. Color the circles green. 5. Color the squares blue. 6. Color the triangles red. © Harcourt © Harcourt 7. Color the rectangles yellow. Decide which operation to use. Then write the number sentence. Solve. 8. Katie catches 16 lightning bugs in a jar. Then 8 of the lightning bugs get out. How many lightning bugs are left in the jar? lightning bugs SR15 Spiral Review MXECA09AWK2X_SR_WK16.indd Page SR16 14/08/2009 15:43:58 elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK16 Week 16 Spiral Review Write a fraction for the shaded part. Use the line plot. 1. 3 4 5 6 7 Number of Letters in Names 2. 3. What is the mode of the data? The mode of the data is . Color the figures. 4. Color the triangles orange. 5. Color the squares purple. 6. Color the rectangles green. 7. Color the circles brown. 8. 9. 10. 7⫹7⫽ ⫽6⫹0 3⫹9⫽ 7⫹8⫽ ⫽1⫹0 9⫹3⫽ SR16 Spiral Review © Harcourt © Harcourt Find the sums. MXECA09AWK2X_SR_WK17.indd Page SR17 7/17/09 5:27:44 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK17 Name Week 17 Spiral Review Subtract. Regroup if you need to. 1. 63 19 2. 48 26 3. 24 16 4. 84 38 5. 72 59 Skip-count. Write the missing numbers. Write a rule for the pattern. 6. 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 77, 79, 81, , Rule: Count by . Use the solid figure. Complete the table. Write how many. solid figure faces edges vertices 7. pyramid 8. 12 7 © Harcourt © Harcourt Complete the fact families. SR17 Spiral Review MXECA09AWK2X_SR_WK18.indd Page SR18 7/17/09 5:27:54 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK18 Name Week 18 Spiral Review Write the number another way. 1. 2 hundreds 1 ten 7 ones 2. 942 3. five hundred forty-eight 4. 700 ⫹ 80 ⫹ 3 Use the line plot to answer the questions. 0 5. Write a number sentence to find the range of the data. 1 2 3 Number of Pets 4 6. What is the mode of the data? The mode of the data is . Use pattern blocks. Combine sides of figures to make a new figure. Trace the new figure. Draw a picture to solve. Write the number sentence. © Harcourt © Harcourt 7. 8. There are 4 ladybugs sitting on a branch. Then 7 more ladybugs come. How many ladybugs are there in all? ladybugs SR18 Spiral Review MXECA09AWK2X_SR_WK19.indd Page SR19 7/17/09 5:28:04 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK19 Name Week 19 Spiral Review Write how many equal parts there are. Then write if these parts are halves, thirds, or fourths. 3. 2. 1. equal parts equal parts equal parts Use the line plot. 3 4. Write a number sentence 4 5 6 Number of Markers Write a title to describe the group of plane figures. to find the range of the data. 7 5. What is the mode of the data? The mode of the data is Write the sum. 7. 6 7 ⫹4 8. 5 8 ⫹2 9. 7 1 ⫹7 10. 3 9 ⫹4 6. © Harcourt . SR19 Spiral Review © Harcourt MXECA09AWK2X_SR_WK20.indd Page SR20 7/17/09 5:28:15 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK20 Name Week 20 Spiral Review Use bills and coins to make a model. 1. Margie has 2 dollar bills, 2 quarters, 7 dimes, and 3 nickels. She wants to buy a kite that costs $1.35. Draw two ways she can pay the exact amount. Find the pattern. Complete the table to solve. 2. How many wheels are on 5 bicycles? number of bicycles 1 2 3 number of wheels 2 4 6 There are 4 5 There are wheels on each bicycle. wheels on 5 bicycles. Use solid figures. Circle the solid figure that has these faces. 3. pyramid cube Draw a line through the information you do not need. Then solve. © Harcourt © Harcourt cylinder 4. Max counts 27 fish on Monday. He counts 13 birds and 25 fish on Tuesday. How many fish does he count on the two days? SR20 fish Spiral Review MXECA09AWK2X_SR_WK21.indd Page SR21 7/17/09 5:28:24 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK21 Name Week 21 Spiral Review Color one part red. Write the fraction that names the red part. 1. 2. 3. Use the picture graph. 4. How many more pennies Coins in TomÕs Pocket than nickels are in Tom’s pocket? pennies nickels dimes Key: Each more pennies stands for 1. Write yes or no to tell about the surface of each object. Object Does it slide? Does it roll? Does it slide and roll? 5. Vegetables in the Garden Vegetable Number radishes 15 tomatoes 27 squash 24 carrots 31 6. How many more carrots than radishes are there? more carrots SR21 Spiral Review © Harcourt © Harcourt Use the table to solve. MXECA09AWK2X_SR_WK22.indd Page SR22 13/08/2009 18:08:29 elhi-2 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK22 Name Week 22 Spiral Review Read the number. Write the number in different ways. three hundred forty-nine 1. hundreds tens Write a title and labels for the bar graph then complete the bar graph to show the information. 2. Ali took a survey of her classmates’ favorite fruits. 4 classmates chose apple, 5 chose peach, 6 chose pear, and 2 chose plum. ones 7 6 5 4 3 2 1 0 apple pear peach plum Circle the objects that have the same figure. Cross out the objects that do not belong. Name the solid figures you circled. Draw a line through the information you do not need. Then solve. © Harcourt © Harcourt 3. 4. On Friday, 156 people visit the art museum. On Saturday, 117 people visit the science museum and 263 people visit the art museum. How many people visit a museum on Saturday? SR22 people Spiral Review MXECA09AWK2X_SR_WK23.indd Page SR23 7/17/09 5:28:56 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK23 Name Week 23 Spiral Review Use Workmat 6 and . Draw to show your work. Write how many in each group. 1. Divide 12 Use cubes to show the number as tens and ones. Draw what you built. Write even or odd. into 4 equal groups. 12 2. in each group Measure the length to the nearest inch. 3. Measure: about inches Measure: about inches 4. Use Workmat 5 and Tens Ones 1 4 5 4 6. Hundreds Tens Ones 2 6 7 3 7. Hundreds Tens Ones 5 7 2 0 © Harcourt Hundreds © Harcourt 5. . Subtract. 7 ⫺ 3 5 ⫺ 1 SR23 3 ⫺ 2 Spiral Review MXECA09AWK2X_SR_WK24.indd Page 1 7/17/09 5:29:06 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK24 Name Week 24 Spiral Review Write the product. 1. 6 2 2. 10 3 3. 5 7 4. 10 2 5. 3 5 6. 2 8 Use the line plot to answer the questions. 1 2 3 4 5 6 7. Write a number sentence to find the range of the data. Number of Books Checked Out from the Library Use 8. What is the mode of the data? The mode of the data is . . Measure the real object. Find the object. 9. Measure. about cubes Rule: Add . © Harcourt 10. Rule: Add In . 11. Out 3 4 11 5 6 In Out 2 7 4 9 6 13 8 SR24 Spiral Review © Harcourt Find a rule. Complete the table. MXECA09AWK2X_SR_WK25.indd Page SR25 7/30/09 11:53:48 PM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK25 Name Week 25 Spiral Review Draw equal groups. Skip-count to find how many in all. Write the multiplication sentence. 1. 5 equal groups. 3 ● in each group. , , , ⫻ , ⫽ Use the bar graph to answer the questions. Children Pictures Drawn Last Week Jon 2. How may pictures did Ali and Gabe draw last week together? Ali Liza Gabe pictures 0 1 2 3 4 5 6 7 8 9 Number of Pictures Measure the length to the nearest inch. 3. Measure: about inches Measure: about inches © Harcourt © Harcourt 4. Draw a picture to solve. Write a number sentence. 5. Arlo has 4 bags of pretzels. He is given 6 more bags. How many bags does he have in all? bags SR25 Spiral Review MXECA09AWK2X_SR_WK26.indd Page SR26 7/17/09 5:29:29 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK26 Name Week 26 Spiral Review What fraction of the group are black? What fraction of the group are gray? 1. of the group are black of the group are gray Skip-count. Write the missing numbers. Write a rule for the pattern. 2. 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 , Rule: Count by Use Workmat 11 and . Regroup if you need to. Write how many tens and ones. Write the difference. Write the time in two ways. © Harcourt 3. 11 12 1 2 10 9 3 4 8 7 6 5 4. Subtract 7 from 35. Workmat Tens Ones : minutes after . tens ones o’clock SR26 Spiral Review © Harcourt 48, 51, 54, MXECA09AWK2X_SR_WK27.indd Page 1 7/30/09 11:57:14 PM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK27 Name Week 27 Spiral Review Use Workmat 6 and ●. Draw to show your work. Write how many in each group. 1. Divide 18 ● into 2 equal 2. Divide 15 ● into 5 equal groups. groups. in each group in each group 3. Use the picture to complete the table. Then shade the bars in the graph to show the data. Circles Circles Number black gray white Colors Color black gray white 0 1 2 3 4 5 6 Number Use solid figures. Color the figure that matches the number of faces, edges, and vertices. 4. 5 faces, 8 edges, © Harcourt © Harcourt 5 vertices Cross out the information you do not need. Then solve. 5. There are 89 geese in a field. There are 72 ducks and 95 geese in a lake. How many geese are there altogether? SR27 geese Spiral Review MXECA09AWK2X_SR_WK28.indd Page SR28 7/17/09 5:30:07 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK28 Name Week 28 Spiral Review Color the fraction strips to show the fractions. Compare. Circle the greater fraction. 1. 1 8 1 12 Find the pattern. Complete the table to solve. 2. How many wheels are on 5 wagons? number of wagons 1 2 3 number of wheels 4 8 12 There are © Harcourt 3. 11 12 1 2 10 9 3 4 8 7 6 5 There are wheels on each wagon. 5 wheels on 5 wagons. . Write how much time has passed. Start Finish 11 12 1 2 10 9 3 4 8 7 6 5 11 12 1 2 10 9 3 4 8 7 6 5 4:00 P.M. 9:00 P.M. © Harcourt Use a 4 Find the sums. 4. 7⫹0⫽ 4⫹0⫽ 5. 8⫹3⫽ 8⫹4⫽ SR28 6. 6⫹9⫽ 9⫹6⫽ Spiral Review MXECA09AWK2X_SR_WK29.indd Page SR29 7/17/09 5:30:15 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK29 Name Week 29 Spiral Review Write how many. Write the multiplication sentence. 1. rows of C rows of C C C Use the table to answer the questions. Nuts in a Bag Kind of Nut Number cashew peanut walnut filbert pecan 2. Of which kind of nut is there the most in the bag? 211 425 237 98 174 3. Of which kind of nut is there the least in the bag? Measure the length to the nearest inch. 4. Measure: about inches Fish in a Tank Color Number of Fish yellow blue orange red 26 43 18 22 5. Mrs. Jagger puts 19 blue fish into a different tank. How many blue fish are left in the tank? blue fish SR29 Spiral Review © Harcourt © Harcourt Use the table to solve. MXECA09AWK2X_SR_WK30.indd Page 1 7/17/09 5:30:24 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK30 Name Week 30 Spiral Review Write the numbers in the correct order. Then write > or <. 1. 724 472 least 744 greatest 2. 392 293 932 greatest Use the hundred chart. Extend the pattern. 3. Skip-count by fives. 1 2 6, 11, 16, , , , , 11 12 21 22 4. Skip-count by twos 31 32 7, 9, 11, , , , , 41 42 3 13 23 33 43 least 4 14 24 34 44 5 15 25 35 45 6 16 26 36 46 7 17 27 37 47 8 18 28 38 48 9 19 29 39 49 10 20 30 40 50 Use paper figures to make three new figures. Cut along the folds. Trace the new figures. Draw a picture to solve. Write a number sentence. 6. Tara has 6 blue beads and 9 orange beads. How many beads does she have in all? © Harcourt © Harcourt 5. beads SR30 Spiral Review MXECA09AWK2X_SR_WK31.indd Page SR31 7/17/09 5:30:32 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK31 Name Week 31 Spiral Review Use . Draw equal groups. Write a multiplication sentence. 1. 3 groups of 4 4 ⫹ 4 ⫹ 4 ⫻ ⫽ ⫽ Skip-count. Write the missing numbers. Write a rule for the pattern. 2. 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 42, 46, 50, Use , Rule: Count by . . Measure the real object. Find the object. Measure. chalkboard eraser 3. about cubes 5. 4. 7 6 ⫹1 6. 4 9 ⫹4 7. 8 6 ⫹2 SR31 8. 3 5 ⫹5 6 1 ⫹4 Spiral Review © Harcourt © Harcourt Write the sum. MXECA09AWK2X_SR_WK32.indd Page SR32 7/17/09 5:30:41 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK32 Name Week 32 Spiral Review Use Workmat 6 and . Draw to show your work. Write how many groups and the remainder. Write a title and labels for the bar graph. Then complete the bar graph to show the information. 1. Divide 14 3. Nikki took a survey of her into groups of 3. classmates’ favorite lunches. 5 classmates chose pizza, 6 chose tacos, 3 chose chili, and 2 chose pasta. groups The remainder is . 7 6 5 2. Divide 9 4 into groups of 4. 3 2 1 groups The remainder is Write a title to describe the group of plane figures. 0 Pizza Tacos Chili Pasta . Use Workmat 5 and . Subtract. © Harcourt 5. Hundreds 7 ⫺ 3 SR32 Tens Ones 3 2 4 5 Spiral Review © Harcourt 4. MXECA09AWK2X_SR_WK33.indd Page SR33 7/17/09 5:30:49 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK33 Name Week 33 Spiral Review Use Workmat 6 and . Draw to show your work. Write a division sentence. 1. Divide 16 into groups of 2. groups 2. Divide 10 into groups of 5. groups Find the pattern. Complete the table to solve. 3. How many legs are on 5 beetles? number of beetles 1 2 3 number of legs 6 12 18 There are 4 5 There are legs on each beetle. legs on 5 beetles. Measure the length to the nearest centimeter. 4. centimeters Draw a picture to solve. Write a number sentence. © Harcourt © Harcourt Measure: about 5. There are 5 flowers in a vase. Each flower has 4 petals. How many petals are there in all? petals SR33 Spiral Review MXECA09AWK2X_SR_WK34.indd Page SR34 7/17/09 5:30:58 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK34 Name Week 34 Spiral Review Circle to show equal parts. Then write if the black part is one half, third, or fourth of the group. 1. 3 equal parts 2. 2 equal parts One group is black. One group is black. of the of the Use the line plot. 4 5 3. Write a number sentence to find 6 7 8 the range of the data. Number of Raisins in Cookies Write more than, less than, or the same as to complete the sentence. 4. It snowed for 5 days in the mountains. 1 week. Use the picture graph. Trees in the Park elm oak maple Each © Harcourt © Harcourt This is Time Relationships There are 24 hours in 1 day. There are 7 days in 1 week. There are about 4 weeks in 1 month. There are 12 months in 1 year. There are about 52 weeks in 1 year. 5. How many oak trees are in the park? oak trees 6. How many trees are in the park altogether? trees stands for 1 tree. SR34 Spiral Review MXECA09AWK2X_SR_WK35.indd Page SR35 7/17/09 5:31:06 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK35 Name Week 35 Spiral Review Use . Color the array. Write a multiplication sentence. 1. 6 rows of 3 ⫻ 2 rows of 5 2. ⫽ ⫻ ⫽ Skip-count. Write the missing numbers. Write a rule for the pattern. 3. 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 , Find the object. dictionary 4. Rule: Count by Choose the unit. © Harcourt Measure. ounce pound Use Workmat 11 and Write how many. . about © Harcourt 52, 55, 58, to make a model. 5. Freddy has 17 toy trains on the floor in his bedroom. He puts 9 trains in a toy chest. How many trains are left on the floor? SR35 trains Spiral Review MXECA09AWK2X_SR_WK36.indd Page SR36 8/1/09 2:33:11 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK36 Name Week 36 Spiral Review Use a number line to write a division sentence. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1. Divide 16 into equal groups of 2. Use the bar graph. 2. How many more Animal Animals Brett Saw on a Hike Squirrel Squirrel Squirrel squirrels than rabbits did Brett see on the hike? Chipmunk Chipmunk Deer Deer Rabbit Rabbit more squirrels 0 1 2 3 4 5 6 7 8 9 Number Measure the length of the real object. Choose the better unit to use. Find the object. 3. Units of Measure Choose the unit. Measure. bulletin board about 4. Rule: Add . In Out 2 5 4 6 9 8 5. SR36 Rule: Add . In Out 3 4 5 11 6 12 Spiral Review © Harcourt © Harcourt Find the rule. Complete the table. MXECA09AWK2X_SR_WK36.indd Page SR37 8/1/09 2:33:13 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK36 MXECA09AWK2X_SR_WK36.indd Page SR38 8/1/09 2:33:13 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK36 MXECA09AWK2X_SR_WK36.indd Page SR39 8/1/09 2:33:13 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK36 MXECA09AWK2X_SR_WK36.indd Page SR40 8/1/09 2:33:13 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK36 MXECA09AWK2X_SR_WK36.indd Page SR41 8/1/09 2:33:14 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK36 MXECA09AWK2X_SR_WK36.indd Page SR42 8/1/09 2:33:14 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK36 MXECA09AWK2X_SR_WK36.indd Page SR43 8/1/09 2:33:14 AM s-124 /Volumes/105/HMH0002/work%0/indd%0/Grade 2_PW/Sprial Review/MXECA09AWK2X_SR_WK36