Basic College Mathematics (10th Edition)

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

Chapter 1 - Whole Numbers - 1.3 Subtracting Whole Numbers - 1.3 Exercises - Page 28: 42



Work Step by Step

First, the 3 in the ones place is less than 8, so in order to subtract we first have to regroup from the tens digit to turn 3 to 13. Then we subtract 13-8 = 5 for the ones column. Next, since the 7 in the tens place became 6, we have to regroup again from the hundreds digit to turn 6 to 16. We subtract 16-8 = 8 for the tens column. Finally, we subtract 8-7 = 1 for the hundreds column. From the 1 in the hundreds place, 8 in the tens place, and 5 in the ones place, we get 185.
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