The difference between 90 and 88 is: 
The difference between 69 and 11 is: 
The difference between 99 and 88 is: 
The difference between 90 and 80 is: 
The difference between 90 and 88 is: 
The difference between 90 and 18 is: 
The difference between 93 and 81 is: 
The difference between 90 and 88 is: 