The difference between 23 and 17 is: 
The difference between 90 and 40 is: 
The difference between 28 and 17 is: 
The difference between 23 and 12 is: 
The difference between 53 and 17 is: 
The difference between 23 and 17 is: 
The difference between 26 and 10 is: 
The difference between 23 and 17 is: 