26-01-2016
Mathematics

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Use rounding or compatible numbers to estimate the sum. 256+321

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thetwicepianist thetwicepianist

26-01-2016

you take 260 is close to 256, and 320 is close to 321, so 260+320=580.
About 580.

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Jennifer132 Jennifer132

26-01-2016

Since 256 is rounded to 260 and 321 is rounded to 320, 260+320= 580. So, 256+321 is about 580.

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