Basic Mathematics: A Text Workbook by Charles P. McKeague

By Charles P. McKeague

Pat McKeague's 7th variation of simple arithmetic is the publication for the fashionable pupil such as you. Like its predecessors, the 7th version is apparent, concise, and sufferer in explaining the recommendations. This re-creation includes 1000's of latest and up to date examples and purposes, a remodel that comes with cleanser photos and photographs (some from Google Earth) that let you see the relationship among arithmetic and your international. This contains references to modern subject matters like gasoline costs and a few of cutting-edge so much ahead considering businesses like Google.

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You can see from these rules that in order to round a number you must be told what column (or place value) to round to. PRACTICE PROBLEMS EXAMPLE 1 SOLUTION Round 5,382 to the nearest hundred. There is a 3 in the hundreds column. We look at the digit just to its 1. Round 5,742 to the nearest a. hundred b. thousand right, which is 8. Because 8 is greater than 5, we add 1 to the 3, and we replace the 8 and 2 with zeros: 8n 8n Greater than 5 EXAMPLE 2 SOLUTION n 5,400 Add 1 to get 4 to the nearest hundred 88 is 88 5,382 Put zeros here Round 94 to the nearest ten.

The sum of 5 and 2 b. 3 added to 8 82. a. The sum of a and 4 b. 6 more than x 83. a. m increased by 1 b. The sum of m and n 84. a. The sum of 4 and 8 is 12. b. The sum of a and b is 6. 2 Problem Set 23 E Find the perimeter of each figure. The first four figures are squares. [Example 9] 85. 86. 87. 88. 2 ft 4 ft 9 in. 3 in. 89. 90. 1 yd 3 yd 5 yd 10 yd 91. 92. 4 in. 6 in. 5 in. 10 in. 12 in. 7 in. E Applying the Concepts 93. Classroom appliances use a lot of energy. You can save 94. The information in the illustration represents the energy by unplugging or turning of unused appliances.

1 ϩ 7 C Rewrite each of the following using the associative property of addition. [Example 6] 59. (1 ϩ 2) ϩ 3 60. (4 ϩ 5) ϩ 9 61. (2 ϩ 1) ϩ 6 62. (2 ϩ 3) ϩ 8 63. 1 ϩ (9 ϩ 1) 64. 2 ϩ (8 ϩ 2) 65. (4 ϩ n) ϩ 1 66. (n ϩ 8) ϩ 1 D Find a solution for each equation. [Example 8] 67. n ϩ 6 ϭ 10 68. n ϩ 4 ϭ 7 69. n ϩ 8 ϭ 13 70. n ϩ 6 ϭ 15 71. 4 ϩ n ϭ 12 72. 5 ϩ n ϭ 7 73. 17 ϭ n ϩ 9 74. 13 ϭ n ϩ 5 B Write each of the following expressions in words. Use the word sum in each case. [Table 2] 75. 4 ϩ 9 76. 9 ϩ 4 77.

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