The difference between 52 and 42 is: 
The difference between 99 and 39 is: 
The difference between 56 and 42 is: 
The difference between 52 and 40 is: 
The difference between 52 and 42 is: 
The difference between 52 and 32 is: 
The difference between 50 and 41 is: 
The difference between 52 and 42 is: 