The difference between 71 and 61 is: 
The difference between 89 and 30 is: 
The difference between 76 and 61 is: 
The difference between 71 and 60 is: 
The difference between 81 and 61 is: 
The difference between 71 and 21 is: 
The difference between 70 and 63 is: 
The difference between 71 and 61 is: 