The difference between 89 and 20 is: 
The difference between 75 and 66 is: 
The difference between 81 and 20 is: 
The difference between 89 and 27 is: 
The difference between 69 and 20 is: 
The difference between 89 and 70 is: 
The difference between 94 and 25 is: 
The difference between 89 and 20 is: 