The difference between 68 and 11 is: 
The difference between 67 and 36 is: 
The difference between 64 and 11 is: 
The difference between 68 and 14 is: 
The difference between 58 and 11 is: 
The difference between 68 and 21 is: 
The difference between 73 and 16 is: 
The difference between 68 and 11 is: 