Page 203 - Basic College Mathematics with Early Integers

180 C HAPTE R 3 I FRACTIONS

Review

Simplify. See Section 1.9.

69. 3 2 70. 4 3 71. 5 3 72. 3 4

Write each using exponents.

# # #
# # #
# # # #
# # # #
73. 7 7 7 7 7 74. 5 5 5 5 75. 2 2 2 3 76. 4 4 10 10 10
Concept Extensions

Write each fraction in two other equivalent ways by inserting the negative sign in different places.

11 21
77. - = = 78. - = =
2 4
-13 45
79. = = 80. = =
15 -57

0 10 0 -3
81. In your own words, explain why = 0 and is 82. In your own words, explain why = 0 and is
10 0 -3 0
undefined. undefined.

Solve. See the Concept Checks in this section.
4 1
83. If represents of a whole diagram, 84. If represents of a whole diagram, sketch
9 3
sketch the whole diagram. the whole diagram.

1 11
85. Round the mixed number 7 to the nearest whole 86. Round the mixed number 5 to the nearest whole
8 12
number. number.

87. The Gap Corporation owns stores with three different brand names, as shown on the bar graph.What fraction of
the stores owned by The Gap Corporation are named “Banana Republic”?

The Gap Corporation–Owned Stores
2000
1532
Number of Stores 1000 576 1059
1500

500

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The Banana Old
Gap Republic Navy
Store Names