The difference between 62 and 31 is: 
The difference between 80 and 17 is: 
The difference between 63 and 31 is: 
The difference between 62 and 30 is: 
The difference between 42 and 31 is: 
The difference between 62 and 21 is: 
The difference between 70 and 39 is: 
The difference between 62 and 31 is: 