The difference between 82 and 78 is: 
The difference between 91 and 17 is: 
The difference between 89 and 78 is: 
The difference between 82 and 71 is: 
The difference between 82 and 78 is: 
The difference between 82 and 28 is: 
The difference between 85 and 71 is: 
The difference between 82 and 78 is: 