Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 1 - Whole Numbers - 1.7 Rounding Whole Numbers - 1.7 Exercises: 41

Answer

Estimate: 220 Exact: 219

Work Step by Step

25 rounds to 30, 63 rounds to 60, 47 rounds to 50, and 84 rounds to 80. Adding the rounded numbers gives us 220, and adding the original numbers gives us 19.
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