The difference between 20 and 17 is: 
The difference between 44 and 33 is: 
The difference between 28 and 17 is: 
The difference between 20 and 10 is: 
The difference between 30 and 17 is: 
The difference between 20 and 17 is: 
The difference between 26 and 13 is: 
The difference between 20 and 17 is: 