8.6×17.3+2.7×8.6简便计算
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8.6×17.3+2.7×8.6=8.6×(17.3+2.7)
咨询记录 · 回答于2023-01-03
8.6×17.3+2.7×8.6简便计算
8.6×17.3+2.7×8.6=8.6×(17.3+2.7)
=8.6×20
=172
拓展
使用的是乘法分配律
16×2.9×1.25
=2×8×1.25×2.9
=2×10×2.9
=20×2.9
=58