Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10: 0134467795
ISBN 13: 978-0-13446-779-5

Chapter 1 - Whole Numbers - 1.10 Solving Application Problems - 1.10 Exercises - Page 94: 8

Answer

253,000,000

Work Step by Step

We are asked to find an estimate and an exact value. To do this, we round each number until they are easy to multiply in our head for the estimate. We then use the calculator to find the exact number. Doing this, we find: $$ 600,000,000-300,000,000 = 300,000,000 $$ The exact value is: $$ 578,000,000-325,000,000 = 253,000,000$$
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