20/1 is an integer and it cannot be represented as a mixed number in any sensible way.
It's 5 and 1/4
21/9 = 7/3 = 21/3
83÷60 = 1 23/60 (one and twenty-three over sixty)
It can't be one. Mixed numbers are greater than one.
2101/100
One and one fourth
5 and 1/4
28/21 = 4/3 = 1 1/3
1 and 3/4
As a mixed number it is: 1 and 23/100
Expressed as a mixed number in its simplest form, 1.54 is equal to 1 27/50 or one and twenty-seven fiftieths.
Expressed as a mixed number in its simplest form, 1.27 is equal to 1 27/100 or one and twenty-seven hundredths.