0.79乘以0.46加上7.9乘以0.24加上11 - 知识问答

0.79乘以0.46加上7.9乘以0.24加上11.4乘以0.079的简便方法怎么计算,请列出算式,谢谢

1个回答

0.79×0.46+7.9×0.24+11.4×0.079
=0.79×0.46+0.79×2.4+1.14×0.79
=0.79×(0.46+2.4+1.14)
=0.79×4
=(0.8-0.01)×4
=3.2-0.04
=3.16

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