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12×25×5×40的简便用算是什么?

=12✘5✘(25✘40) =60...

12×(40+5) =12×40+12×5(运用乘法分配律使计算简便) =480+60 =540

简便运算12.5×20.4+12.5×9.6-1.25=12.5×(20.4+9.6)-1.25=1...

=25*4*2+12.5*2*4*5+3 =100*2+100*5+3 =200+500+3 ...

12.4×1.02+25.5简便算法 =12.4+12.4x0.02+25.5 =1...

9.5×40×12.5 =9.5×(40×12.5) =9.5×500 =4750

1250÷25×5 简便算法 1250÷25×5 =1250/(25/5) =1250/5 ...

解:依题意得算式, 12.25÷0.5÷0.5 =12.25÷(0.5×0.5) =12.25...

25×12.5×32可以看做25×32×12.5=(25×4)×(8×12.5)=100×100=1...

8×12.5+0.4×25

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