0.31 = 31/100
I would write it as decimal fraction or an improper fraction. For example, three and a quarter = 3.25 or 31/4.
It is 31/7.
350% = 350/100 = 7/2 or 31/2
350% = 7/2 or 31/2.
It is simply 31/1 as an improper fraction
31/100
31/10
31/100
31/100
31/1000
31 over 100 or 31/100.
31/100
0.31 = 31/100
31/45
31/40
31/100