The difference between 56 and 49 is: 
The difference between 81 and 31 is: 
The difference between 59 and 49 is: 
The difference between 56 and 45 is: 
The difference between 86 and 49 is: 
The difference between 56 and 39 is: 
The difference between 57 and 40 is: 
The difference between 56 and 49 is: 