The difference between 43 and 21 is: 
The difference between 24 and 12 is: 
The difference between 43 and 21 is: 
The difference between 43 and 22 is: 
The difference between 53 and 21 is: 
The difference between 43 and 11 is: 
The difference between 51 and 29 is: 
The difference between 43 and 21 is: 