The difference between 85 and 57 is: 
The difference between 99 and 84 is: 
The difference between 89 and 57 is: 
The difference between 85 and 51 is: 
The difference between 65 and 57 is: 
The difference between 85 and 77 is: 
The difference between 89 and 51 is: 
The difference between 85 and 57 is: 