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数学
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(270)*4/1+0.25*21.5+(-8又2/1)*(-25%) 简便方法计算
人气:281 ℃ 时间:2019-08-26 04:22:32
解答
题目有问题
应该是 270*1/4+0.25*21.5+(-8又1/2)*(-25%)
=1/4*(270+21.5+8.5)=1/4*300=75
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