The difference between 39 and 30 is: 
The difference between 59 and 16 is: 
The difference between 34 and 30 is: 
The difference between 39 and 36 is: 
The difference between 69 and 30 is: 
The difference between 39 and 20 is: 
The difference between 47 and 38 is: 
The difference between 39 and 30 is: 