The difference between 80 and 11 is: 
The difference between 66 and 17 is: 
The difference between 84 and 11 is: 
The difference between 80 and 10 is: 
The difference between 50 and 11 is: 
The difference between 80 and 51 is: 
The difference between 89 and 10 is: 
The difference between 80 and 11 is: 