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0.5×1.25×2×8×11用简便方法计算

0.5×1.25×2×8×11 =0.5x2x(1.25x8)x11 =1x10x11 =11...

0.5×1.25×2.6 =0.5x2.6x10/8 =13/8

1.25×0.5×8×0.2 =(1.25×8)×(0.5×0.2) =10×0.1 =1

(12.5+1.25)*0.8 =(12.5+1.25)*4*0.2 =(12.5*4+1.25...

0.5×0.8×0.04×1.25×0.2×2.5 =(0.5×0.2)×(0.8×1.25)×(0...

0.5*0.8*0.04*1.25*0.2*0.025 =(0.5*0.2)*(0.04*0.0...

不对,应该是1.6写成4*0.4利用1.25*4=5 0.5*0.4=0.2 0.2*5=1

(12.5+1.25)x0.08 =12.5x0.08+1.25x0.08 =1+0.1 =1...

原式等于 10+100+1=111 ~回答完毕~ ~\(^o^)/~祝学习进步~~~

1.25×2.5-0.8×2.5 =(1.25-0.8)×2.5 =0.45×2.5 =1.125 ...

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