0.75乘1.6加1.4乘0.75加7.5的简便计算

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0.75乘1.6加1.4乘0.75加7.5的简便计算
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0.75乘1.6加1.4乘0.75加7.5的简便计算
0.75乘1.6加1.4乘0.75加7.5的简便计算

0.75乘1.6加1.4乘0.75加7.5的简便计算
0.75乘1.6加1.4乘0.75加7.5
=0.75×(1.6+1.4+1)
=0.75×4
=3

(1.6+1.4)*0.75+7.5

=(1.6+1.4)*0.75+7.5

0.75×1.6+0.75×1.4+0.75×10=0.75×(1.6+1.4+10)=9.75