34 Chapter 1 Whole Numbers 15,259 New Hampshire 80,000 70,000 60,000 40,000 30,000 20,000 10,000 1782 cm 1782 cm 1892 mm 1892 mm Section 1.5 Multiplication of Whole Numbers and Area Concepts 1. Introduction to Multiplication 2. Properties of Multiplication 3. Multiplying Many-Digit Whole Numbers 4. Estimating Products by Rounding 5. Applications Involving Multiplication 6. Area of a Rectangle 1. Introduction to Multiplication Suppose that Carmen buys three cartons of eggs to prepare a large family brunch. If there are 12 eggs per carton, then the total number of eggs can be found by adding three 12s. 12 eggs 12 eggs 12 eggs 36 eggs For Exercises 49–52, use the graph provided. 49. Determine the state with the greatest number of students enrolled in 9th grade. Round this number to the nearest thousand. 50. Determine the state with the least number of students enrolled in 9th grade. Round this number to the nearest thousand. 51. Use the information in Exercises 49 and 50 to estimate the difference between the number of students in the state with the greatest enrollment and that of the least enrollment. 52. Estimate the total number of students enrolled in 9th grade in the selected states by first rounding the number of students to the thousands place. Number of Students Enrolled in Grade 9 for Selected States Number of Children Connecticut Maine Delaware Rhode Island Vermont 0 46,377 11,726 78,771 17,108 13,137 7456 50,000 Massachusetts Source: National Center for Education Statistics Figure for Exercises 49–52 Expanding Your Skills For Exercises 53–56, round the numbers to estimate the perimeter of each figure. (Answers may vary.) 53. 54. 55. 56. 182 ft 169 ft 169 ft 182 ft 121 ft 105 in. 57 in. 57 in. 57 in. 57 in. 105 in. 1851 cm 1851 cm 3045 mm 3045 mm
miller_prealgebra_2e_ch1_3
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