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3.82乘9.9加0.382用简便方法计算急
人气:400 ℃ 时间:2020-03-07 14:40:45
解答
3.82乘9.9加0.382
=3.82×9.9+3.82×0.1
=3.82×(9.9+0.1)
=3.82×10
=38.2
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