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Name LESSON 34 Algebra • Find Sums for 4 Addends 1 2.4.B OBJECTIVE Find sums of four 2-digit numbers. You can add 4 numbers in different ways. One way is to add pairs of digits in the ones column. 1 16 22 31 + 16 ____ 85 Add a pair of digits. 6+2=8 Add the other pair. 1+6=7 You can add numbers in any order. The sum stays the same. Then add these two sums. 8 + 7 = 15 Then add the digits in the tens column. So, 16 + 22 + 31 + 16 = 85. © Houghton Mifflin Harcourt Publishing Company Add. 1. 43 57 32 + 2 ____ Number and Operations 2. 24 21 19 + 32 ____ 3. 21 14 20 + 42 ____ 67 Name 1 2.4.B Algebra • Find Sums for 4 Addends Add. 1. 2. 18 32 23 + 3 _____ 4. 3. 5. 83 32 61 + 2 2 _____ 24 62 70 + 33 _____ 45 31 29 + 72 _____ 6. 37 15 31 + 12 _____ 21 13 96 + 18 _____ Solve. Show how you solved the problem. 7. Kinza jogs 16 minutes on Monday, 13 minutes on Tuesday, 9 minutes on Wednesday, and 20 minutes on Thursday. What is the total number of minutes she jogged? minutes 68 Lesson 34 © Houghton Mifflin Harcourt Publishing Company Problem Solving