The difference between 42 and 30 is: 
The difference between 63 and 11 is: 
The difference between 49 and 30 is: 
The difference between 42 and 30 is: 
The difference between 62 and 30 is: 
The difference between 42 and 30 is: 
The difference between 50 and 38 is: 
The difference between 42 and 30 is: 