Basic College Mathematics (10th Edition)

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

Chapter 4 - Decimals - Review Exercises - Page 321: 21



Work Step by Step

72.789 We need to round-off the number to the nearest hundredth. First cut off the number after hundredths place. i.e. 72.78 look only the first digit you are cutting off. ignore other numbers. i.e. look digit 9 If the first digit you are cutting off is 5 or more, round up the part of the number you are keeping. Here it is 9 so round up by adding 1 hundredth to the part we are keeping. i.e. 72.78 + 0.01 = 72.79. So Answer is 72.79.
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