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1.25x3.2 简便方法

1.25X3.2 =1.25X8X0.4 =10X0.4 =4

1.25*3.2=(1.25*8)*0.4=10*0.4=4 简便计算的定义: 简便计算是一种特殊的

1.25x3.2 =1.25x8x0.4 =10x0.4 =4

原式 =1.25x0.25x(4x0.8) =(1.25x0.8)x(0.25x4) =1x1

=(1.25×8)×(04×25) =10×10 =100

1.25X3.2的简便运算 1.25*3.2 =1.25*8*0.4 =10*0.4 =4

原式 =1.25×8×0.4 =(1.25×8)×0.4 =10×0.4 =4 希望对

原式 =1.25*0.8*4*0.25 =1*1 =1 满意采纳奥

用简便方法计算下面各题,1.25x3.2x5 ,1.25x3.2x5 =1.25*8*(0.4*

1.25*3.2*0.25 =1.25*0.8*4*0.25 =0.1*1 =0.1 在口算

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