The difference between 78 and 35 is: 
The difference between 91 and 75 is: 
The difference between 77 and 35 is: 
The difference between 78 and 36 is: 
The difference between 98 and 35 is: 
The difference between 78 and 15 is: 
The difference between 82 and 39 is: 
The difference between 78 and 35 is: 