The difference between 44 and 15 is: 
The difference between 81 and 77 is: 
The difference between 49 and 15 is: 
The difference between 44 and 13 is: 
The difference between 94 and 15 is: 
The difference between 44 and 35 is: 
The difference between 49 and 10 is: 
The difference between 44 and 15 is: 