The difference between 80 and 22 is: 
The difference between 72 and 40 is: 
The difference between 87 and 22 is: 
The difference between 80 and 20 is: 
The difference between 70 and 22 is: 
The difference between 80 and 42 is: 
The difference between 89 and 21 is: 
The difference between 80 and 22 is: 