The difference between 34 and 13 is: 
The difference between 99 and 65 is: 
The difference between 37 and 13 is: 
The difference between 34 and 13 is: 
The difference between 94 and 13 is: 
The difference between 34 and 13 is: 
The difference between 40 and 19 is: 
The difference between 34 and 13 is: 