The difference between 45 and 21 is: 
The difference between 59 and 26 is: 
The difference between 49 and 21 is: 
The difference between 45 and 20 is: 
The difference between 35 and 21 is: 
The difference between 45 and 31 is: 
The difference between 50 and 26 is: 
The difference between 45 and 21 is: 