可以用乘法分配律简算
原式=9.6×0.6+0.4×2×0.3
=0.6×(9.6+0.4)
=0.6×10
=6
原式=9.6×0.6+0.4×0.6
=0.6×(9.6+0.4)
=0.6×10
=6
希望采纳,谢谢!
原式=9.6×0.6+0.4×2×0.3
=9.6×0.6+0.4×0.6【这两步是把0.8×0.3转化成0.4×0.6,以便利用乘法分配律,因为9.6+0.4=10,所以更容易计算】
=0.6×(9.6+0.4)【乘法分配律】
=0.6×10
=6
解:
原式
=9.6x0.6+0.4x2x0.3
=9.6x0.6+0.4x0.6
=(9.6+0.4)x0.6
=10x0.6
=6
方法:
利用乘法分配律实现简便计算。
9.6×0.6+0.8×0.3
=9.6×0.6+0.4×2×0.3
=(9.6+0.4)×0.6
=6