13 R.1 Fractions, Decimals, and Percents Add or subtract as indicated. Write answers in lowest terms as needed. See Example 6. 53. 7 15 + 4 15 54. 2 9 + 5 9 55. 7 12 + 1 12 56. 3 16 + 5 16 57. 5 9 + 1 3 58. 4 15 + 1 5 59. 3 8 + 5 6 60. 5 6 + 2 9 61. 5 9 + 3 16 62. 3 4 + 6 25 63. 3 1 8 + 2 1 4 64. 4 2 3 + 2 1 6 65. 7 9 - 2 9 66. 8 11 - 3 11 67. 13 15 - 3 15 68. 11 12 - 3 12 69. 7 12 - 1 3 70. 5 6 - 1 2 71. 7 12 - 1 9 72. 11 16 - 1 12 73. 4 3 4 - 1 2 5 74. 3 4 5 - 1 4 9 75. 8 2 9 - 4 2 3 76. 7 5 12 - 4 5 6 Work each problem involving fractions. 77. Refer to the figure in the margin. For each description, write a fraction in lowest terms that represents the region described. (a) The dots in the large rectangle as a part of the dots in the entire figure (b) The dots in the triangle as a part of the dots in the entire figure (c) The dots in the overlapping region of the triangle and the rectangle as a part of the dots in the triangle alone; As a part of the rectangle alone 78. At the conclusion of the Pearson softball league season, batting statistics for five players were as shown in the table. Player At-Bats Hits Home Runs Benita 36 12 3 Christine 40 9 2 Chase 11 5 1 Chin 16 8 0 Greg 20 10 2 Use this information to answer each question. Estimate as necessary. (a) Which player got a hit in exactly 1 3 of their at-bats? (b) Which player got a home run in just less than 1 10 of their at-bats? (c) Which player got a hit in just less than 1 4 of their at-bats? (d) Which two players got hits in exactly the same fractional part of their at-bats? What was that fractional part, expressed in lowest terms? Concept Check Provide the correct response. 79. In the decimal number 367.9412, name the digit that has each place value. (a) tens (b) tenths (c) thousandths (d) ones or units (e) hundredths 80. Write a decimal number that has 5 in the thousands place, 0 in the tenths place, and 4 in the ten-thousandths place. 81. For the decimal number 46.249, round to the place value indicated. (a) hundredths (b) tenths (c) ones or units (d) tens 82. Round each decimal to the nearest thousandth. (a) 0.8 (b) 0.4 (c) 0.9762 (d) 0.8645
RkJQdWJsaXNoZXIy NjM5ODQ=