3.75*48+62.5*0.48的简便方法
问题描述：
3.75*48+62.5*0.48的简便方法
答
3.75*4.8+62.5*0.48
=37.5*0.48+62.5*0.48
=0.48*(37.5+62.5)
=0.48*100
=48