Keep in mind that the fraction part of a mixed number can be expressed in a number of different ways and still be equivalent to the same decimal value. The whole number part of a mixed number is not affected by this.
1 1/2 = 1.5 1 2/4 = 1.5 1 3/6 = 1.5 1 4/8 = 1.5 1 5/10 = 1.5 1 6/12 = 1.5
2.25 = 2 1/4 = 2 2/8 = 2 3/12 = 2 4/16 = 2 5/20 = 2 6/24 = 2 7/28 3.6 = 3 3/5 = 3 6/10 = 3 9/15 = 3 12/20 = 3 15/25 = 3 18/30 = 3 21/35
Now you get to try a few for yourself.