8.5*96+85*0.4

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8.5*96+85*0.4
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8.5*96+85*0.4
8.5*96+85*0.4

8.5*96+85*0.4
8.5*96+85*0.4
=8.5*96+8.5*4
=8.5*(96+4)
=8.5*100
=850

8.5*96+85*0.4=8.5*96+8.5*4=8.5*(96+4)=8.5*100=850

8.5*96+85*0.4
=85*9.6+85*0.4
=85*(9.6+0.4)
=85*10
=850

8.5*96=85*9.6
运用乘法分配率
85*9.6+85*0.4
=85*(9.6+0.4)
=85*10
=850