The difference between 80 and 19 is: 
The difference between 88 and 30 is: 
The difference between 89 and 19 is: 
The difference between 80 and 10 is: 
The difference between 80 and 19 is: 
The difference between 80 and 49 is: 
The difference between 87 and 16 is: 
The difference between 80 and 19 is: 