0.4*0.25/0.4*0.75 简便运算

问题描述:

0.4*0.25/0.4*0.75 简便运算

分子:0.4*0.25
分母:0.4*0.75=0.4*0.25*3
直接约分,
0.4*0.25/0.4*0.75
=0.4*0.25/0.4*0.25 *3
=1/3