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398.22 * 93.87 = 398 * 94 = (400 - 2)*(90 + 4) = 36000 + 1600 - 180 - 8

= 37,412

The exact answer, using a calculator, is 37380.9114. So the estimate is too large by 0.08%

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Q: What Estimate the answer to 398.22 93.87 by first rounding each number to the nearest one?
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