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六点6×0点5+0点一五×3点四怎么简便计算
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六点6×0点5+0点一五×3点四的简便计算可以用乘法运算律简化运算。
6.6×0.5+0.15×3.4
=11×0.6×0.5+0.15×3.4
=11×0.3+0.15×2×1.7
=11×0.3+0.3×1.7
=0.3×(11+1.7)
=0.3×12.7
=3.81
6.6×0.5+0.15×3.4
=11×0.6×0.5+0.15×3.4
=11×0.3+0.15×2×1.7
=11×0.3+0.3×1.7
=0.3×(11+1.7)
=0.3×12.7
=3.81
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