The difference between 27 and 19 is: 
The difference between 90 and 69 is: 
The difference between 29 and 19 is: 
The difference between 27 and 13 is: 
The difference between 27 and 19 is: 
The difference between 27 and 19 is: 
The difference between 28 and 10 is: 
The difference between 27 and 19 is: 