fidelinap fidelinap

07-01-2015
Mathematics

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estimate then find the sum or difference 8.5+1.8

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bookgirl9632 bookgirl9632

07-01-2015

Estimating usually means rounding to the nearest whole number to make it so that you can do the math in your head.
So, 8.5 becomes 9, and 1.8 becomes 2.
The sum would then be 11
And the difference is 7

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