Basic College Mathematics (9th Edition)

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

Chapter 4 - Decimals - Review Exercises - Page 321: 36

Answer

Estimate: 70 million Exact: 77 million

Work Step by Step

Here 93.6 million pet cats 16.6 million pet birds To find how many more pet cats are there then pet birds we need to find the difference i.e. subtraction. First lets find estimate with front end rounding. 93.6 (rounds to) 90 16.6 (rounds to) 20 Estimated more million pet cats then pet birds are : 90 - 20 = 70 Now let's find the final exact answer 93.6 -16.6 ____ 77.0 Exact 77 million more pet cats are there then pet birds.
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