The difference between 84 and 28 is: 
The difference between 68 and 65 is: 
The difference between 89 and 28 is: 
The difference between 84 and 21 is: 
The difference between 84 and 28 is: 
The difference between 84 and 28 is: 
The difference between 87 and 21 is: 
The difference between 84 and 28 is: 