The difference between 49 and 36 is: 
The difference between 68 and 29 is: 
The difference between 49 and 36 is: 
The difference between 49 and 36 is: 
The difference between 89 and 36 is: 
The difference between 49 and 36 is: 
The difference between 51 and 38 is: 
The difference between 49 and 36 is: 