80 Chapter 1 Whole Numbers 40. Compute the difference in the number of people in the 20–39 age group and the number in the 40–59 age group. 41. How many more people are in the 0–19 age group than in the 60–79 age group? 42. For a recent year, 95,192,000 tons of watermelon and 23,299,000 tons of cantaloupe were grown. Determine the difference between the amount of watermelon grown and the amount of cantaloupe grown. 43. For a recent year, Phil Mickelson earned $25,800,000 from both the golf tour and endorsements.Vijay Singh earned $18,600,000. Find the difference in their earnings. 44. Find the perimeter of the figure. 30 m 44 m 25 m 25 m 53 m Section 1.4 For Exercises 45 and 46, round each number to the given place value. 45. 5,234,446; millions 46. 9,332,945; ten-thousands For Exercises 47 and 48, estimate the sum or difference by rounding to the indicated place value. 47. 894,004 123,883; hundred-thousands 48. hundreds 49. For a recent year, the population of Russia was 140,041,247, and the population of Japan was 127,078,679. Estimate the difference in their populations by rounding to the nearest million. 50. The state of Missouri has two dams: Fort Peck with a volume of 96,050 cubic meters and Oahe with a volume of 66,517 m3. Round the numbers to the nearest thousand to estimate the total volume of these two dams. 1m32 330 489 123 571; Section 1.5 51. Identify the factors and the product. 33 40 1320 52. Indicate whether the statement is equal to the product of 8 and 13. a. b. c. 81132 182 13 182 1132 For Exercises 53–57, for each property listed, choose an expression from the right column that demonstrates the property. 53. Associative property a. of multiplication 54. Distributive property b. of multiplication over addition 55. Multiplication c. property of 0 56. Commutative d. property of multiplication 57. Multiplication e. property of 1 3142 4132 19 1 19 11 82 3 1 18 32 0 29 0 41312 4 3 4 1 For Exercises 58–60, multiply. 58. 59. 60. 6000 500 142 110242 1512 43 61. A discussion group needs to purchase books that are accompanied by a workbook.The price of the book is $26, and the workbook costs an additional $13. If there are 11 members in the group, how much will it cost the group to purchase both the text and workbook for each student? 62. Orcas, or killer whales, eat 551 pounds (lb) of food a day. If Sea World has two adult killer whales, how much food will they eat in 1 week?
miller_prealgebra_2e_ch1_3
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