An easy way you can think about this is the decimal value of each fraction. The decimal value of 3/5 is 0.6, and the decimal value of 4/5 is 0.8. Therefore, there are an infinite number of fractions between 3/5 and 4/5. However, just to name a few for you are 61/100, 31/50, 63/100, 16/25, 13/20, 33/50, 67/100, 17/25, 69/100, 7/10, 71/100, 18/25, 73/100, 37/50, 3/4, 19/25, 77/100, 39/50, and 79/100.
