The difference between 90 and 22 is: 
The difference between 70 and 63 is: 
The difference between 98 and 22 is: 
The difference between 90 and 20 is: 
The difference between 90 and 22 is: 
The difference between 90 and 72 is: 
The difference between 98 and 20 is: 
The difference between 90 and 22 is: 