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0.8除以1.25脱式计算

0.8÷1.25 =80÷125 =16/25

1.25*(8+0.8) =1.25*8+1.25*0.8 =10+1 =11

脱式计算 (1-0.8×1.25)÷0.01 =(1-1)÷0.01 =0÷0.01 =0

0.91÷0.8+1.25×1.08 =0.91×1.25+1.25×1.08 =(0.91+1.08)×1.25 =1.99×1.25 =2.4875

4.2×(1.25乘以0.8) =4.2x(1.25x0.8) =4.2x1 =4.2

括号里的20-1点二五×0点八括起来除以一点九脱式计算 解: (20-1.25×0.8)÷1.9 =(20-1)÷1.9 =19÷1.9 =10

5.6×0.8×1.25脱式计算 解:采用分配律, 原式=5.6x(0.8x1.25) =5.6x1 =5.6

0.8乘1.25乘10.6 =1x10.6 =10.6

1.25x(0.4+0.8) =1.25×0.4+1.25×0.8 =0.5+1 =1.5

3.25除以12.5除以0.8的脱式计算 3.25除以12.5除以0.8 =3.25÷(12.5*0.8) =3.25÷10 =0.325

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