Basic College Mathematics (10th Edition)

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

Chapter 1 - Whole Numbers - 1.2 Adding Whole Numbers - 1.2 Exercises - Page 18: 3



Work Step by Step

First, add the digits in the ones column (each number's ones place) to determine the digit in the ones place of the sum: $6+3=9$ Next, add the digits in the tens column (each number's tens place) to determine the digit in the tens place of the sum: $5+3=8$ If the sum has $8$ in the tens place and $9$ in the ones place, it must be $89$.
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