The difference between 26 and 23 is: 
The difference between 98 and 66 is: 
The difference between 29 and 23 is: 
The difference between 26 and 22 is: 
The difference between 76 and 23 is: 
The difference between 26 and 13 is: 
The difference between 31 and 28 is: 
The difference between 26 and 23 is: 