0.36×0.25 简便计算

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0.36×0.25 简便计算
0.36×0.25 简便计算

0.36×0.25 简便计算
0.36×0.25
=0.9×0.4×0.25
=0.9×(0.4×0.25)
=0.9×0.1
=0.09

0.36×0.25
=0.09×4×0.25
=0.09×1
=0.09

化为0.09×4×0.25

0.36*0.25=0.6*0.6*0.5*0.5=0.6*0.5*0.6*0.5=0.3*0.3=0.09

﹙0.36÷4﹚×﹙0.25×4﹚=0.09