2/3 cannot be simplified further.
3/4
13/100
0.23 = 23/100
8016 is an integer, and there is no sensible way to represent it as a fraction.
As a whole number with a fraction, that's three and six tenths (3 and 6/10ths). This can be expressed at 3.6
72/100 = 18/25
No but as a decimal 9/20 is equivalent to 0.45
0.05 = 5/100 = 1/20
2/2 = 1
2/27
A percentage is a number out of 100. For example, 40% is 40 out of 100, so it can be written as a fraction 40/100. This can then be simplified to 4/10 by dividing the top and bottom of the fraction by 10. Then simplifed to 2/5 by dividing the top and the bottom of the fraction by 2. So 40% as a fraction is 2/5
2 over 4 can be simplified to 1 over 2.