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Use compatible numbers to find two estimates
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Sep 11, 2017
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Use compatible numbers to find two estimates
Mathematics
middle-school
David Ryder
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1
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4
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round
1418 rounds to 1420
22 rounds to 20
1420/20=142/2=71
about 71
EdwardLau
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Sep 16, 2017
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EdwardLau
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