The difference between 31 and 27 is: 
The difference between 94 and 69 is: 
The difference between 38 and 27 is: 
The difference between 31 and 20 is: 
The difference between 81 and 27 is: 
The difference between 31 and 27 is: 
The difference between 39 and 25 is: 
The difference between 31 and 27 is: 