The difference between 71 and 30 is: 
The difference between 78 and 27 is: 
The difference between 72 and 30 is: 
The difference between 71 and 30 is: 
The difference between 71 and 30 is: 
The difference between 71 and 30 is: 
The difference between 80 and 39 is: 
The difference between 71 and 30 is: 