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0.25×0.4的竖式怎样计算

0.25*0.4的竖式怎样计算0.25*0.4=0.1.

等于0.1

0.25x(0.4+0.8)x1.25 =0.25x4x(0.1+0.2)x1.25 =1x0.3x1.25 =0.375

(0.4*0.4)*(0.25/0.25)=0.16

0.25*0.4=0.25*4*0.1=1*0.1=0.1

64x(12.5+0.25+0.5) =8*(8*12.5+8*2.5+8*0.5) =8*(100+20+4) =8*(125-1) =1000-8 =992

把0.25和0.03的末位对齐,然后按照整数乘法计算,最后点4位小数.答案是0.0075.

0.25*0.4/0.25*0.4=0.4*(0.25/0.25)*0.4=0.16

=0.250.25x0.4x0.4=0.4x0.4=0.16

0.8x0.25 x0.4 x12.5=(0.8x0.25) x(0.4 x12.5)=0.2x0.05=0.01

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