2.5*8.5+25*0.15怎么简算
问题描述:
2.5*8.5+25*0.15怎么简算
答
2.5*8.5+25*0.15
=2.5x8.5+2.5x1.5
=2.5x(8.5+1.5)
=2.5x10
=25