86×0.67+8.6×4.3-8.6的简便计算
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86×0.67+8.6×4.3-8.6=8.6×(6.7+4.3−1)=8.6×10=86
咨询记录 · 回答于2022-10-13
86×0.67+8.6×4.3-8.6的简便计算
86×0.67+8.6×4.3-8.6=8.6×(6.7+4.3−1)=8.6×10=86
86×0.67变化成8.6×6.7
86×0.67+8.6×4.3-8.6=8.6×(6.7+4.3−1)=8.6×(11−1)=8.6×10=86