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Number Sense Unit Test Outline Test: Thursday and Friday, October 8-9, 2015 Review Session: Wednesday, October 7 – during recess Please use this list as a guide to help you to study. If you do not understand something, please make an appointment to come and see me on Monday or Tuesday before the quiz. You have pages in your binder that we have not finished that you can use for extra practice. Also, reread your notes, and redo any problems we have worked on again on a separate sheet of paper while covering the answer. Writing Numbers Write a number in expanded form 123,456,789 = 100,000,000 + 20,000,000 + 3,000,000 + 400,000 + 50,000 + 6,000 + 700 + 80 + 9 Write a number using expanded notation 32,854 = (3 • 10,000) + (2 • 1,000) + (8 • 100) + (5 • 10) + (4 • 1) Write a number in word form 817,000,529 = Eight hundred seventeen million five hundred twenty-nine Write a number in short word form 359,625,998 = 359 million 625 thousand 998 Write a number in standard form: o From expanded form o From expanded notation o From word form o From short word form Place Value Tell the value of a digit 42,985,613 The “8” = 80,000 The “2” = 2,000,000 Tell which digit is in a given place What digit is in the hundred thousands place? 9 Name each of the periods through millions 123,456,789 – 123 are in the millions period 456 are in the thousands period 789 are in the ones period Place commas to show periods Rounding Round any number up to 9 digits to a given place and explain how you did it – including “rolling a nine” 875,899,342 – rounded to the nearest 10,000 is 875,900,000 State whether rounding is appropriate in a given situation. Telephone Number – no Estimation – yes Comparing/Ordering Numbers Compare numbers up to 9 digits using <,>, =, ≠ 34,689 < 261,345 17 ≠ 12 + 3 Make the 5 largest and 5 smallest numbers possible when given a set of digits 5 9 6 2 Largest Smallest 9,652 2,569 9,625 2,596 9,562 2,659 9,526 2,695 9,265 2,956 Put 4 numbers in order from least to greatest and explain how you did it. 345,678 23,845 9,389,520 345,678 23,845 9,389,520 12,556,789 12,556,789 Renaming Numbers Rename numbers using addition, subtraction, and multiplication 35,000 = 30,000 + 5,000 or 42,000 – 7,000 or 7,000 x 5 Negative Integers Locate positive and negative integers on a number line Compare and order positive and negative integers -5 < -2 Put in order from least to greatest: 3, -4, 0, 1, -2 = -4; -2; 0; 1; 3 Solve problems using negative integers. If you owe $5 to a friend and you earn $6, how much do you have? $1