Question 664359: what is the estimated product 86 and 721 ?
Answer by ReadingBoosters(3246)   (Show Source):
You can put this solution on YOUR website! Round 86 to 90
Round 721 to 700
7*9 is 63
Estimate 86*721 as 63,000
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OR
Round 86 to 90
Round 721 to 720
72*9 = 648
Estimate 86*721 as 64,800
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