The difference between 29 and 15 is: 
The difference between 44 and 42 is: 
The difference between 29 and 15 is: 
The difference between 29 and 17 is: 
The difference between 69 and 15 is: 
The difference between 29 and 15 is: 
The difference between 33 and 19 is: 
The difference between 29 and 15 is: 