The difference between 37 and 17 is: 
The difference between 53 and 49 is: 
The difference between 39 and 17 is: 
The difference between 37 and 12 is: 
The difference between 67 and 17 is: 
The difference between 37 and 27 is: 
The difference between 30 and 15 is: 
The difference between 37 and 17 is: 