80吨比_吨多60%;_吨比80吨少37.5%;45千克是60千克的_%;28米比35米少_%.
问题描述:
80吨比______吨多60%;______吨比80吨少37.5%;45千克是60千克的______%;28米比35米少______%.
答
(1)80÷(1+60%)
=80÷160%
=50(吨)
(2)80×(1-37.5%)
=80×62.5%
=50(吨)
(3)45÷60
=0.75
=75%
(4)(35-28)÷35
=7÷35
=0.2
=20%
故答案为:50;50;75;20.