72 Chapter 1 Whole Numbers Operation: This problem can be phrased as an addition problem with a missing addend or as an equivalent subtraction problem. ? 168 351 351 168 ? or Example 2 351 168 183 July August September Cars 23 28 32 Trucks 13 8 10 SUVs 15 18 21 Find the total number of vehicles sold in July. Solution: Given: The number of each type of vehicle sold in July (highlighted in red) Find: The total number of vehicles sold in July Operation: The word total indicates addition. Total 23 13 15 There were 51 vehicles sold in July. Solving a Business Application A ream of paper holds 500 sheets. Kim purchases 24 reams for her office. How many sheets of paper is this? Solution: Familiarize and draw a picture. 500 sheets 500 sheets 500 sheets 500 sheets · · · · · · Example 3 51 Subtracting yields The distance between Indianapolis and Springfield is 183 mi. Solving a Sales Application A used car business keeps records of vehicle sales by type of vehicle and month. Given: There are 24 reams (packages) of paper with 500 sheets per package. Find: The total number of sheets of paper Operation: This situation calls for repeated addition.Therefore, we will multiply. 2415002 12,000 There are 12,000 sheets of paper. TIP: The answer is reasonable because the sum of the distances equals the total distance. 183 mi 168 mi 351 mi Skill Practice Refer to the table in Example 2. 2. Find the total number of trucks sold during this 3-month period. Skill Practice 3. One page of print in a book contains 48 lines of text. How many lines of text are in one chapter containing 21 pages? TIP: We might also reason that each pair of 2 reams contains 1000 sheets of paper. Since there are 12 pairs of 2 in 24, there must be 12 thousand sheets of paper. Answers 2. 31 trucks 3. 1008 lines
miller_basic_college_math_3e_ch1_3
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