The difference between 54 and 23 is: 
The difference between 97 and 53 is: 
The difference between 57 and 23 is: 
The difference between 54 and 21 is: 
The difference between 44 and 23 is: 
The difference between 54 and 13 is: 
The difference between 60 and 29 is: 
The difference between 54 and 23 is: 