Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 1 - Whole Numbers - 1.2 Adding Whole Numbers - 1.2 Exercises: 7

Answer

$318+151+420=889$

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: $8+1+0=9$ Next, add the digits in the tens column (each number's tens place) to determine the digit in the tens place of the sum: $1+5+2=8$ Then add the digits in the hundreds column (each number's hundreds place) to determine the digit in the hundreds place of the sum: $3+1+4=8$ If the sum has $8$ in the hundreds place, $8$ in the tens place and $9$ in the ones place, it must be $889$.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.