The difference between 59 and 50 is: 
The difference between 83 and 31 is: 
The difference between 55 and 50 is: 
The difference between 59 and 50 is: 
The difference between 99 and 50 is: 
The difference between 59 and 10 is: 
The difference between 65 and 56 is: 
The difference between 59 and 50 is: 