The difference between 80 and 39 is: 
The difference between 25 and 11 is: 
The difference between 89 and 39 is: 
The difference between 80 and 30 is: 
The difference between 40 and 39 is: 
The difference between 80 and 49 is: 
The difference between 82 and 31 is: 
The difference between 80 and 39 is: 