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8.68减去8.68除以0.56乘以0.5的简便算法
人气:413 ℃ 时间:2020-03-20 20:55:44
解答
8.68— 8.68÷0.56×0.5
=8.68-15.5×0.5
=8.68-7.75
=0.93
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