0.79乘0.46加7.9乘0.24加11.4乘0.079用简便方法计算?
问题描述:
0.79乘0.46加7.9乘0.24加11.4乘0.079用简便方法计算?
答
0.79X0.46+7.9X0.24+11.4X0.079
=0.79X0.46+0.79X2.4+1.14X0.79
=0.79X(0.46+2.4+1.14)
=0.79X4
=3.16
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