28-08-2015
Mathematics

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estimate the difference 422 - 284

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StellarStella StellarStella

28-08-2015

Well, 422 rounded is 400, and 284 rounded is 300. And 400-300 is 100. The answer is 100.

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29-08-2015

Round 422 to 400 and 284 to 300 then take away. It then estimates to 100

Hope this helped ;)

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