The difference between 45 and 18 is: 
The difference between 77 and 28 is: 
The difference between 49 and 18 is: 
The difference between 45 and 13 is: 
The difference between 25 and 18 is: 
The difference between 45 and 38 is: 
The difference between 49 and 12 is: 
The difference between 45 and 18 is: 