The difference between 49 and 47 is: 
The difference between 41 and 13 is: 
The difference between 48 and 47 is: 
The difference between 49 and 45 is: 
The difference between 99 and 47 is: 
The difference between 49 and 37 is: 
The difference between 50 and 48 is: 
The difference between 49 and 47 is: 