The difference between 30 and 19 is: 
The difference between 44 and 33 is: 
The difference between 39 and 19 is: 
The difference between 30 and 10 is: 
The difference between 90 and 19 is: 
The difference between 30 and 19 is: 
The difference between 34 and 13 is: 
The difference between 30 and 19 is: 