Answer
(b) and (d)
Work Step by Step
In (b) and (d), the tens digit of the number being subtracted is larger than the tens digit of the other number, so the tens digits have to be regrouped first in order to be subtracted.
Basic College Mathematics (9th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0321825535
ISBN 13:
978-0-32182-553-7
Chapter 1 - Whole Numbers - 1.3 Subtracting Whole Numbers - 1.3 Exercises - Page 28: 32
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