The difference between 31 and 11 is: 
The difference between 45 and 23 is: 
The difference between 32 and 11 is: 
The difference between 31 and 10 is: 
The difference between 61 and 11 is: 
The difference between 31 and 11 is: 
The difference between 35 and 16 is: 
The difference between 31 and 11 is: 