The difference between 91 and 22 is: 
The difference between 68 and 44 is: 
The difference between 99 and 22 is: 
The difference between 91 and 20 is: 
The difference between 41 and 22 is: 
The difference between 91 and 82 is: 
The difference between 99 and 20 is: 
The difference between 91 and 22 is: 