Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 1 - Foundations for Algebra - 1-2 Order of Operations and Evaluating Expressions - Got It? - Page 11: 2

Answer

a. 27 b. 7 c. 17 d. The fraction bar groups the number on top (numerator) and the number on the bottom (denominator) with a divide operation.

Work Step by Step

a. $ 5 \times 7 - 4^2 \div 2 = 35 - 16 \div 2 = 35 - 8 = 27$ b. $12 - 25 \div 5 = 12 - 5 = 7$ c. $\frac{4 + 3^4}{7 - 2} = \frac{4 + 81}{5} = \frac{85}{5} = 17$ d. The fraction bar is a grouping symbol because it groups together the number above it (numerator) and the number below it (denominator). For example, $\frac{8}{2}$ is grouping the 8 and the 2 with a divide operation (8 / 2).
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