Basic College Mathematics (9th Edition)

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

Chapter 4 - Decimals - 4.5 Dividing Decimal Numbers - 4.5 Exercises - Page 303: 29

Answer

The exact answer is 60.2 (not 6.2).

Work Step by Step

We need to check whether the answer given is reasonable: $307.02\div 5.1=6.2$ First, we estimate the answer by rounding: $307.02\div 5.1\approx 300\div 5=60$ Since 6.2 and 60 are not very close, the given answer is not reasonable. We find the exact answer by dividing: $5.1\overline{)307.02}$ First, we move the decimal point one place to the right to simplify the division: $~~~~~~~~~~60.2$ $51\overline{)3070.2}$ $~~~~~~\underline{306}$ $~~~~~~~~~~10$ $~~~~~~~~~~~~\underline{0}$ $~~~~~~~~~~102$ $~~~~~~~~~~\underline{102}$ $~~~~~~~~~~~~~~0$ We see that the exact answer is 60.2 (not 6.2).
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.