The difference between 57 and 23 is: 
The difference between 50 and 15 is: 
The difference between 59 and 23 is: 
The difference between 57 and 26 is: 
The difference between 77 and 23 is: 
The difference between 57 and 43 is: 
The difference between 63 and 29 is: 
The difference between 57 and 23 is: 