21千克比27千克少几分之几,35吨比25吨多几分之几
问题描述:
21千克比27千克少几分之几,35吨比25吨多几分之几
答
21千克比27千克少几分之几
(27-21)÷27=6/27=2/9
35吨比25吨多几分之几
(35-25)÷25=10/25=2/5
答
21千克比27千克少9分之2
35吨比25吨多5分之2
答
2/9
2/5