The difference between 24 and 12 is: 
The difference between 47 and 31 is: 
The difference between 24 and 12 is: 
The difference between 24 and 11 is: 
The difference between 74 and 12 is: 
The difference between 24 and 12 is: 
The difference between 30 and 18 is: 
The difference between 24 and 12 is: 