The difference between 50 and 39 is: 
The difference between 67 and 53 is: 
The difference between 59 and 39 is: 
The difference between 50 and 30 is: 
The difference between 50 and 39 is: 
The difference between 50 and 29 is: 
The difference between 59 and 38 is: 
The difference between 50 and 39 is: 