The difference between 38 and 29 is: 
The difference between 99 and 52 is: 
The difference between 39 and 29 is: 
The difference between 38 and 27 is: 
The difference between 78 and 29 is: 
The difference between 38 and 19 is: 
The difference between 39 and 20 is: 
The difference between 38 and 29 is: 