The difference between 39 and 11 is: 
The difference between 84 and 50 is: 
The difference between 33 and 11 is: 
The difference between 39 and 10 is: 
The difference between 39 and 11 is: 
The difference between 39 and 21 is: 
The difference between 41 and 13 is: 
The difference between 39 and 11 is: 