The difference between 61 and 31 is: 
The difference between 41 and 12 is: 
The difference between 62 and 31 is: 
The difference between 61 and 30 is: 
The difference between 51 and 31 is: 
The difference between 61 and 21 is: 
The difference between 61 and 34 is: 
The difference between 61 and 31 is: 