38 Chapter 1 Whole Numbers For Exercises 49–52, use the bar graph provided. 49. Determine the state with the greatest number of students enrolled in grades 6–12. Round this number to the nearest thousand. 50. Determine the state with the least number of students enrolled in grades 6–12. 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 highest enrollment and that of the lowest enrollment. 52. Estimate the total number of students enrolled in grades 6–12 in the selected states by first rounding the number of students to the thousands place. Number of Students Enrolled in Grades 6–12 for Selected States Number of Children 16,756 Maine Delaware 80,000 70,000 60,000 40,000 30,000 20,000 10,000 Connecticut New Hampshire Vermont Rhode Island 0 45,879 9137 78,815 17,422 13,172 8059 50,000 Massachusetts Source: National Center for Education Statistics Figure for Exercises 49–52 53. If you were to estimate the following sum, what place value would you round to and why? 389,220 2988 12,824 101,333 54. Identify the place value that you would round to when estimating the answer to the following problem. Then round the values and estimate the answer. 4208 932 1294 Expanding Your Skills For Exercises 55–58, round the numbers to estimate the perimeter of each figure. (Answers may vary.) 55. 56. 1782 cm 1782 cm 1892 mm 1892 mm 57. 58. 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
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