The difference between 83 and 19 is: 
The difference between 91 and 21 is: 
The difference between 89 and 19 is: 
The difference between 83 and 11 is: 
The difference between 93 and 19 is: 
The difference between 83 and 29 is: 
The difference between 84 and 10 is: 
The difference between 83 and 19 is: 