The difference between 99 and 12 is: 
The difference between 25 and 22 is: 
The difference between 96 and 12 is: 
The difference between 99 and 18 is: 
The difference between 89 and 12 is: 
The difference between 99 and 22 is: 
The difference between 104 and 17 is: 
The difference between 99 and 12 is: 