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1.08 0.8 0.27

1.08×0.8÷0.27 =108/27×8/10 =4×4/5 =16/5 =3.2

 1.08*0.8/0.27=0.8*(1.08/0.27)=0.8*4=3.2

1.08×0.8-0.27 =0.27×4×0.8-0.27 =0.27×3.2-0.27×1 =0.27×(3.2-1) =0.27×2.2 =0.54×1.1 =0.54×(1+0.1) =0.54+0.054 =0.594

原式 =1.08x0.8÷0.27 =1.08÷0.27x0.8 =4x0.8 =3.2 供参考。

见图

1.08×0.8÷0.27=1.08÷(0.3×0.9)×0.8=1.08÷0.9÷0.3×0.8=1.2÷0.3×0.8=4×0.8=3.21.9×9.9+0.19=0.19×99+0.19=0.19×(99+1)=0.19×100=19

1.08×0.8÷0.27=3.2 竖式如下:

1.08×0.8÷0.27 =1.08÷0.27×0.8 =4×0.8 =3.2;

1.08×0.8÷0.27 =1.08÷0.27×0.8 =4×0.8 =3.2

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