The difference between 84 and 27 is: 
The difference between 89 and 13 is: 
The difference between 88 and 27 is: 
The difference between 84 and 21 is: 
The difference between 74 and 27 is: 
The difference between 84 and 17 is: 
The difference between 87 and 20 is: 
The difference between 84 and 27 is: 