The difference between 99 and 80 is: 
The difference between 56 and 17 is: 
The difference between 94 and 80 is: 
The difference between 99 and 83 is: 
The difference between 99 and 80 is: 
The difference between 99 and 80 is: 
The difference between 102 and 83 is: 
The difference between 99 and 80 is: 