The difference between 80 and 29 is: 
The difference between 30 and 12 is: 
The difference between 89 and 29 is: 
The difference between 80 and 20 is: 
The difference between 50 and 29 is: 
The difference between 80 and 39 is: 
The difference between 88 and 27 is: 
The difference between 80 and 29 is: 