24 Chapter 1 Whole Numbers For Exercises 49–52, subtract, then check the answer by using addition. (See Example 5.) 49. Check: 50. Check: 8 3 3 8 7 2 2 7 51. Check: 52. Check: 4 1 1 4 9 1 1 9 For Exercises 53–56, subtract and check the answer by using addition. (See Example 6.) 53. 54. 4865 55. 14,356 13,253 56. 34,550 31,450 For Exercises 57–72, subtract the whole numbers involving borrowing. (See Examples 7 and 8.) 57. 58. 59. 60. 61. 62. 63. 64. 65. 66. 67. 68. 32,112 3700 2987 8000 3788 69. 32,439 1498 70. 21,335 4123 71. 8,007,234 2,345,115 72. 3,045,567 1,871,495 Concept 4: Translations and Applications Involving Addition and Subtraction For Exercises 75–92, translate the English phrase to a mathematical statement and simplify. (See Examples 9 and 10.) 75. The sum of 13 and 7 76. The sum of 100 and 42 77. 45 added to 7 78. 81 added to 23 79. 5 more than 18 80. 2 more than 76 81. 1523 increased by 90 82. 1320 increased by 448 83. The total of 5, 39, and 81 84. 78 decreased by 6 85. Subtract 100 from 422. 86. Subtract 42 from 89. 87. 72 less than 1090 88. 60 less than 3111 89. The difference of 50 and 13 90. The difference of 405 and 103 91. Subtract 35 from 103. 92. Subtract 14 from 91. 93. Three top television shows entertained the following number of viewers in one week: 21,209,000 for Dancing with the Stars, 20,836,000 for American Idol, and 16,448,000 for NCIS. Find the total number of viewers for these shows. 94. To schedule enough drivers for an upcoming week, a local pizza shop manager recorded the number of deliveries each day from the previous week: 38, 54, 44, 61, 97, 103, 124.What was the total number of deliveries for the week? 73. Use the expression 7 – 4 to explain why subtraction is not commutative. 74. Is subtraction associative? Use the numbers 10, 6, 2 to explain. 28,334 62,088 59,871 23,901 8,064 10,425 9,022 3000 2356 6002 1238 850 303 710 189 64 48 76 59 713 1347 221
miller_prealgebra_2e_ch1_3
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