The difference between 33 and 30 is: 
The difference between 52 and 19 is: 
The difference between 36 and 30 is: 
The difference between 33 and 30 is: 
The difference between 73 and 30 is: 
The difference between 33 and 20 is: 
The difference between 42 and 39 is: 
The difference between 33 and 30 is: 