The difference between 72 and 63 is: 
The difference between 84 and 23 is: 
The difference between 75 and 63 is: 
The difference between 72 and 61 is: 
The difference between 82 and 63 is: 
The difference between 72 and 63 is: 
The difference between 79 and 60 is: 
The difference between 72 and 63 is: 