The difference between 60 and 29 is: 
The difference between 86 and 11 is: 
The difference between 69 and 29 is: 
The difference between 60 and 20 is: 
The difference between 30 and 29 is: 
The difference between 60 and 19 is: 
The difference between 62 and 21 is: 
The difference between 60 and 29 is: 