The difference between 81 and 29 is: 
The difference between 48 and 32 is: 
The difference between 89 and 29 is: 
The difference between 81 and 20 is: 
The difference between 61 and 29 is: 
The difference between 81 and 29 is: 
The difference between 86 and 24 is: 
The difference between 81 and 29 is: 