The difference between 33 and 15 is: 
The difference between 81 and 17 is: 
The difference between 38 and 15 is: 
The difference between 33 and 12 is: 
The difference between 53 and 15 is: 
The difference between 33 and 25 is: 
The difference between 38 and 10 is: 
The difference between 33 and 15 is: 