The difference between 11 and 11 is: 
The difference between 98 and 61 is: 
The difference between 16 and 11 is: 
The difference between 11 and 10 is: 
The difference between 51 and 11 is: 
The difference between 11 and 11 is: 
The difference between 12 and 16 is: 
The difference between 11 and 11 is: 