The difference between 40 and 27 is: 
The difference between 70 and 67 is: 
The difference between 49 and 27 is: 
The difference between 40 and 20 is: 
The difference between 50 and 27 is: 
The difference between 40 and 37 is: 
The difference between 48 and 25 is: 
The difference between 40 and 27 is: 