The difference between 49 and 37 is: 
The difference between 63 and 61 is: 
The difference between 48 and 37 is: 
The difference between 49 and 30 is: 
The difference between 89 and 37 is: 
The difference between 49 and 37 is: 
The difference between 50 and 38 is: 
The difference between 49 and 37 is: 