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9000÷72×(1.25×0.7×8)简便计算

9000÷72×(1.25×0.7×8) =(9×1000)÷(8×9)×(1.25×8×0.7)

1.25×0.7×0.8 =1.25×0.8×0.7 =1×0.7 =0.7 四则混合运算顺序:同级

1.25×0.7×0.8 =1.25×0.8×0.7 =1×0.7 =0.7

运用除法的性质进行简算: 3.62÷1.25÷0.8 =3.62÷(1.25×0.8) =3.

1.25×(8.1+ 0.7) =1.25×8.8 =1.25×8+1.25×0.8 =10+

1.25x0.7x0.8 =1.25x0.8x0.7 =1x0.7 =0.7

原式 =1.25*0.8*0.7 =0.7 满意采纳奥

1.25×8+0.8×7 =10+5.6 =15.6 这题直接计算最简便

4.72÷1.25+5.28×0.8 =4.72x0.8+5.28x0.8 =(4.72+5.2

=1.25×8×(0.7×9) =10×6.3 =63

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