Basic College Mathematics (10th Edition)

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

Chapter 1 - Whole Numbers - 1.7 Rounding Whole Numbers - 1.7 Exercises - Page 75: 65

Answer

Ten-thousand: 39,840,000; Hundred-thousand: 39,800,000; Million: 40,000,000

Work Step by Step

To round to the nearest ten-thousand, we see that the digit to the right of the ten-thousands place is 6, so we round up to the next biggest ten-thousands value (38,840,000). To round to the nearest hundred-thousand, we see that the digit to the right of the hundred-thousands place is 3, so we round down and keep the same value (39,836,000). To round to the nearest million, we see that the digit to the right of the millions place is 8, so we round up to the next highest million (40,000,000).
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