12.5乘4.86乘0.4的简便算法列数式
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12.5乘4.86乘0.4的简便算法列数式
12.5乘4.86乘0.4
=12.5*2.43*0.8
=(12.5*0.8)*2.43
=10*2.43
=24.3
12.5×4.86×0.4=12.5×0.4×2×2.43=10×2.43=24.3 请采纳
12.5*2.43*0.8
=(12.5*0.8)*2.43
=10*2.43
=24.3