Section 2.3 Simplifying Fractions to Lowest Terms 121 77. For a recent year, the population of the United States was reported to be 296,000,000. During the same year, the population of California was 36,458,000. a. Round the U.S. population to the nearest hundred million. b. Round the population of California to the nearest million. c. Using the results from parts (a) and (b), write a simplified fraction showing the portion of the U.S. population represented by California. 78. For a recent year, the population of the United States was reported to be 296,000,000. During the same year, the population of Ethiopia was 75,067,000. a. Round the U.S. population to the nearest hundred million. b. Round the population of Ethiopia to the nearest million. c. Using the results from parts (a) and (b), write a simplified fraction comparing the population of the United States to the population of Ethiopia. d. Based on the result from part (c), how many times greater is the U.S. population than the population of Ethiopia? Expanding Your Skills 79. Write three fractions equivalent to 34 . 80. Write three fractions equivalent to 13 . 18. 82. Write three fractions equivalent to 80 81. Write three fractions equivalent to 12 100. Calculator Connections Topic: Simplifying Fractions on a Calculator Some calculators have a fraction key, .To enter a fraction, follow this example. Expression Keystrokes Result 3_| 4 c c 2 _ 1 _| 5 2 1 5 c } whole number fraction 11 5 11 _| 5 3 4 3 4 To simplify a fraction to lowest terms, follow this example. Expression Keystrokes Result 22 10 22 10 To convert to an improper fraction, follow this example. Expression Keystrokes Result 2 1 5 Calculator Exercises For Exercises 83–90, use a calculator to simplify the fractions. Write the answer as a proper or improper fraction. 83. 84. 85. 86. 87. 88. 89. 90. 713 437 969 646 871 469 493 510 462 220 779 969 728 784 792 891 2 1 5 numerator denominator
miller_basic_college_math_3e_ch1_3
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