103乘87减29乘9的简便方法
103乘87减29乘9的简便方法
数学人气：329 ℃时间：2020-02-05 21:15:41
优质解答
103×87-29×9=103×3×29-29×3×3=29×3×（103-3）=87×100=8700
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