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0.25x0.5 0.25x8简便运算

解0.25x0.5÷0.25x8=1/4*1/2÷(1/4)*8=1/4*1/2*4*8=1/4*4*1/2*8=1/2*8=4

解:依题意得算式,0.25*0.5÷0.25*0.8=0.25÷0.25*(0.5*0.8)=1*0.4=0.4即0.25*0.5÷0.25*0.8=0.4

0.25*0.5÷0.25*0.8=(0.25÷0.25)*(0.5*0.8)=1*0.4=0.4

1.25x64x0.5x0.25=(1.25x8)x(2x0.5)x(4x0.25)=10x1x1=10

0.25乘以0.5除以0.25乘以8=0.25x0.5x0.25x2x4=0.25x(0.5x2)x0.25x4=0.25x1x1=0.25

0.25x4.8x0.5用简便法算=0.25x4x1.2x0.5=1x0.6=0.6

0.25*0.5÷0.25*8=0.25÷0.25*0.5*8=1*O.5*8=4 0.25*0.5÷0.25*8=0.25*8*0.5÷0.25=2*2=4

原式=0.25*8*1.25+0.25*0.4*1.25=0.25*(8*1.25)+(0.25*0.4)*1.25=0.25+0.125=0.375

7.1x0.25x8=7.1*(0.25*8)=7.1*2=14.2

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

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