The difference between 21 and 14 is: 
The difference between 90 and 61 is: 
The difference between 26 and 14 is: 
The difference between 21 and 10 is: 
The difference between 71 and 14 is: 
The difference between 21 and 14 is: 
The difference between 27 and 10 is: 
The difference between 21 and 14 is: 