2.5x4.76x5-7.6简便计算
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2.5x4.76x5-7.6=2.5x(4+0.76)x5-7.6
咨询记录 · 回答于2023-03-08
2.5x4.76x5-7.6简便计算
2.5x4.76x5-7.6=2.5x(4+0.76)x5-7.6
=2.5×4×5+2.5×5×0.76-7.6
=50+2.5×0.5×7.6-7.6
=50+7.6×(1.25-1)=50+7.6×0.25=51.9
答案是51.9亲