The difference between 77 and 16 is: 
The difference between 91 and 27 is: 
The difference between 79 and 16 is: 
The difference between 77 and 10 is: 
The difference between 97 and 16 is: 
The difference between 77 and 36 is: 
The difference between 80 and 19 is: 
The difference between 77 and 16 is: 