The difference between 15 and 14 is: 
The difference between 90 and 60 is: 
The difference between 18 and 14 is: 
The difference between 15 and 14 is: 
The difference between 95 and 14 is: 
The difference between 15 and 14 is: 
The difference between 20 and 19 is: 
The difference between 15 and 14 is: 