The difference between 67 and 56 is: 
The difference between 99 and 65 is: 
The difference between 68 and 56 is: 
The difference between 67 and 50 is: 
The difference between 87 and 56 is: 
The difference between 67 and 26 is: 
The difference between 70 and 59 is: 
The difference between 67 and 56 is: 