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89乘86分之3简便计算

89乘86分之3 =(86+3)乘86分之3 =86乘86分之3+3乘86分之3 =3+86分...

89×14+89×86 =89×(14+86) =89×100 =8900

89x3/86 =(86+3)×3/86 =86×3/86+3×3/86 =3+9/86 =...

原式 =88x88/89 =(89-1)x88/89 =89x88/89-1x88/89 =...

88*(100-11) =88*100-88*11 =8800-968 =7832 备注 ...

89乘以30 =(90-1)×30 =90×30-1×30 =2700-30 =2670

89×37/90简便计算 解: 89×90分之37 =(90-1)×90分之37 =90×90分之...

43×89 =43×(90-1) =43×90-43×1 =3870-43 =3827 你...

52乘89 =52×(90-1) =52×90-52 =4680-52 =4628

89×29+88 =89×29+89-1 =89×30-1 =2670-1 =266...

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