The difference between 64 and 29 is: 
The difference between 53 and 39 is: 
The difference between 69 and 29 is: 
The difference between 64 and 23 is: 
The difference between 84 and 29 is: 
The difference between 64 and 39 is: 
The difference between 66 and 21 is: 
The difference between 64 and 29 is: 