-25/1
7/25 is a proper fraction and there is no sensible way to write it as an improper fraction.
0.280 as a fraction is 7/25
You could write it as 25/1.
6.12 in fraction form is 153/25
12.5 as an improper fraction is 25/2
4/25
12/25
6/25
2/25
44/25
1/25
362/25