Answer
350
Work Step by Step
We estimate this value by rounding every number to the nearest ten, and then we subtract. Thus, we obtain:
$820-470=350$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Skills Handbook - Using Estimation - Exercises - Page 788: 4
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