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3. Writing to Explain Use rounding to estimate the product
13 ! 9. Then, use compatible numbers to find the actual
answer. If Alison was rounding to find how much 13 books
that were \$9 apiece cost, would she get a good estimate?
Explain

If I were rounding, I'd estimate 13 * 10 = a little less than \$130.

34×4

6×33=198

50

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