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 - Page 75: 68

Answer

Ten: 221,540; Hundred: 221,500, Thousand: 222,000

Work Step by Step

To round to the nearest ten, we see at the digit to the right of the tens place is 3, so we round down and keep the same tens value (221,540). To round to the nearest hundred, we see at the digit to the right of the hundreds place is 4, so we round down and keep the same hundreds value (221,500). To round to the nearest thousand, we see at the digit to the right of the thousands place is 5, so we round up to the next highest thousand (222,000).
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