The difference between 35 and 31 is: 
The difference between 39 and 16 is: 
The difference between 38 and 31 is: 
The difference between 35 and 30 is: 
The difference between 45 and 31 is: 
The difference between 35 and 11 is: 
The difference between 42 and 38 is: 
The difference between 35 and 31 is: 