The difference between 41 and 30 is: 
The difference between 88 and 73 is: 
The difference between 41 and 30 is: 
The difference between 41 and 30 is: 
The difference between 61 and 30 is: 
The difference between 41 and 10 is: 
The difference between 50 and 39 is: 
The difference between 41 and 30 is: 