2.6×3.5-1.4简便方法
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2.6×3.5-1.4=2.6×5×0.7-2×0.7=0.7×(2.6×5-2)=0.7×11=7.7
咨询记录 · 回答于2022-10-13
2.6×3.5-1.4简便方法
2.6×3.5-1.4=2.6×5×0.7-2×0.7=0.7×(2.6×5-2)=0.7×11=7.7
简便方法为2.6×3.5-1.4=2.6×5×0.7-2×0.7=0.7×(2.6×5-2)=0.7×11=7.7