The difference between 90 and 41 is: 
The difference between 84 and 10 is: 
The difference between 97 and 41 is: 
The difference between 90 and 40 is: 
The difference between 50 and 41 is: 
The difference between 90 and 21 is: 
The difference between 99 and 40 is: 
The difference between 90 and 41 is: 