Prime numbers are number that can't be divided except it is it's self and 1. For example, 3,5,7,11,13,17, 19, 23, 29, 31, 37...... All of those numbers can only be divided with itself and 1.
3 = 3x1
7 = 7x1
23= 23 x 1
hope this helps
Try explaining how you worked the problem and how you did it
Here is the problem and amswer 9/3=3 3/2= 1.5