3.57*40.1的简便计算
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3.57×40.1=0.7×5.1×40.1=0.7×40.1×5.1=28.07×5.1=28.07×(5+0.1)=28.07×5+28.07×0.1=140.35+2.807=143.157
咨询记录 · 回答于2022-09-29
3.57*40.1的简便计算
3.57×40.1=0.7×5.1×40.1=0.7×40.1×5.1=28.07×5.1=28.07×(5+0.1)=28.07×5+28.07×0.1=140.35+2.807=143.157
答案143.157 解答如上