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0.25x0.7x0.8简便计算

1.25x0.7x0.8简便计算=1.25*0.8*0.7=1000*0.001*0.7=0.7

0.25*0.7*0.8=(0.25*0.8)*0.7=0.2*0.7=0.14

原式=0.25x(4x0.8)x8=0.25x4x0.8x8=1x0.8x8=0.8x8=6.4

0.8x0.25+0.8=0.8*(0.25+1)=0.8*1.25=1

0.8x0.25=0.2x4x0.25=0.2x1=0.2

0.25*3.2*8=0.25*4*0.8*8=1*0.8*8=6.4

0.25x(4+0.8)=0.25x4+0.25x0.8=1+0.2=1.2

0.25 x 4 = 1 x 4.78 = 4.78

12.5x0.7x0.8=12.5*8*0.07=100*0.07=7

(0.25*0.125)*0.8=0.25*(0.125*0.8)=0.25*0.1=0.025

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