The difference between 83 and 13 is: 
The difference between 65 and 52 is: 
The difference between 86 and 13 is: 
The difference between 83 and 10 is: 
The difference between 63 and 13 is: 
The difference between 83 and 63 is: 
The difference between 84 and 15 is: 
The difference between 83 and 13 is: 