The difference between 24 and 23 is: 
The difference between 47 and 37 is: 
The difference between 28 and 23 is: 
The difference between 24 and 22 is: 
The difference between 64 and 23 is: 
The difference between 24 and 13 is: 
The difference between 30 and 29 is: 
The difference between 24 and 23 is: 