Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10:
ISBN 13:

Chapters 1-6 - Cumulative Review Exercises - Page 472: 4

Answer

Estimate: $630$ Exact: $568.11$

Work Step by Step

We need to multiply: $~~~65.3$ $\times ~~\underline{8.7}$ First, we estimate by rounding: $~~~~70$ $\times ~~\underline{9}$ $~~630$ Next, we find the exact answer: $~~~~~~~~~65.3$ $~~~~\times ~~\underline{8.7}$ $~~~~~~~~4571$ $+~~~\underline{52240}$ $~~~~~568.11$ We see that our estimate and exact answers are a bit off from each other.
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