#### Answer

Estimate: 2,800; Exact: 2,828

#### Work Step by Step

863 rounds to 900, 735 rounds to 700, 438 rounds to 400, 792 rounds to 800. For the estimate, we add 900 + 700 + 400 + 800 = 2800. For the exact sum, we add 863 + 735 + 438 + 792 = 2828

Published by
Pearson

ISBN 10:
0321825535

ISBN 13:
978-0-32182-553-7

Estimate: 2,800; Exact: 2,828

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