The difference between 50 and 19 is: 
The difference between 63 and 23 is: 
The difference between 59 and 19 is: 
The difference between 50 and 10 is: 
The difference between 30 and 19 is: 
The difference between 50 and 29 is: 
The difference between 53 and 12 is: 
The difference between 50 and 19 is: 