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27*0.24+7.3*0.24能用简便算法
人气:486 ℃ 时间:2020-03-20 17:11:44
解答
27*0.24+7.3*0.24
=34.3*(0.25-0.01)
=34.3/4-0.343
=8.575-0.343
=8.232
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