The difference between 72 and 67 is: 
The difference between 64 and 15 is: 
The difference between 78 and 67 is: 
The difference between 72 and 61 is: 
The difference between 72 and 67 is: 
The difference between 72 and 27 is: 
The difference between 75 and 60 is: 
The difference between 72 and 67 is: 