7.5*10.1-0.75的简便算法

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7.5*10.1-0.75的简便算法7.5*10.1-0.75的简便算法7.5*10.1-0.75的简便算法7.5*(10+0.1)-0.75=7.5*10-7.5*0.1-0.75=757.5*10

7.5*10.1-0.75的简便算法
7.5*10.1-0.75的简便算法

7.5*10.1-0.75的简便算法
7.5*(10+0.1)-0.75=7.5*10-7.5*0.1-0.75=75

7.5*10.1-0.75 =7.5*10.1-0.75*10 =7.5*10.1-7.5 =7.5*10.1-7.5*0.1 =7.5*(10.1-0.1) =7.5*10 =75

7.5*10.1-0.75=7.5*(10+0.1)-0.75=7.5*10+0.75-0.75=75

可能就是这样: 7.5*(10+0.1)-0.75 =7.5*10+7.5*0.1-0.75 =75+0.75-0.75 =75

7.5*(10+0.1)-0.75
=7.5*10+7.5*0.1-0.75
=75+0.75-0.75
=75

7.5*(10+0.1)-0.75=7.5*10+0.75-0.75=75