Section 1.3 Addition and Subtraction of Whole Numbers and Perimeter 23 For Exercises 8–10, identify the addends and the sum. 11 10 21 1 13 4 18 5 8 2 15 8. 9. 10. For Exercises 11–18, add. (See Example 1.) 11. 12. 13. 14. 10 8 30 12 15 32 21 53 42 33 15. 890 107 16. 444 354 17. 4 13 102 18. 11 221 5 For Exercises 19–32, add the whole numbers with carrying. (See Examples 2 and 3.) 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 79 112 12 62 907 34 4980 10,223 23,112 892 31. 32. 10,223 25,782 4980 92,377 5622 34,659 Concept 2: Properties of Addition For Exercises 33–36, rewrite the addition problem, using the commutative property of addition. (See Example 4.) 33. 10144 34. 8 13 35. x y 36. t q For Exercises 37–40, rewrite the addition problem using the associative property of addition, by inserting a pair of parentheses. (See Example 4.) 37. 38. 123 92 10 23 9 10 7 112 82 7 12 8 39. r 1s t2 r s t 40. 1c d2 e c d e 462 388 152 549 642 295 658 231 38 77 87 24 25 59 76 45 41. Explain the difference between the commutative and associative properties of addition. 42. Explain the addition property of 0. Then simplify the expressions. a. b. c. d. Concept 3: Subtraction of Whole Numbers For Exercises 43 and 44, identify the minuend, subtrahend, and the difference. 43. 44. 9 6 3 12 8 4 67 0 x 0 423 0 0 25 For Exercises 45–48, write the subtraction problem as a related addition problem. For example, 19 6 13 can be written as 13 6 19. 45. 27 9 18 46. 20 8 12 47. 102 75 27 48. 211 45 166
miller_prealgebra_2e_ch1_3
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