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1.25x7.2能简便运算吗

1.25x7.2用简便方法计算 =1.25x8x0.9 =10x0.9 =9

1.25×7.2×0.9 =1.25×8×0.9×0.9 =10×0.81 =8.1

能,有两中方法

x=d×a 所以wxc=ys

0.25x16x1.25x7.2有简便方法吗? =0.25*4*4*1.25*8*0.9 =1*...

1.25X78X1.25X2的简便计算 =(1.25x80-1.25x2)x2.5 =(10...

12.5x4x8x2.5=(12.5x8)x(4x2.5)=100x10=1000 1.25x7....

1.6×7.5×1.25 =2×0.8×7.5×1.25 =(2×7.5)×(0.8×1.25) =...

解析:通过观察,首先把1.6拆分成2乘以0.8,然后运用乘法结合律,将2和7.5相乘,0.8和1.2...

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