The difference between 77 and 60 is: 
The difference between 52 and 47 is: 
The difference between 78 and 60 is: 
The difference between 77 and 60 is: 
The difference between 87 and 60 is: 
The difference between 77 and 50 is: 
The difference between 82 and 65 is: 
The difference between 77 and 60 is: 