巧算:37.5*1.2+12.5*6.4
问题描述:
巧算:37.5*1.2+12.5*6.4
急
答
37.5*1.2+12.5*6.4
=12.5*3*1.2+12.5*6.4
=12.5*(3.6+6.4)
=12.5*10
=125