The difference between 61 and 45 is: 
The difference between 50 and 44 is: 
The difference between 66 and 45 is: 
The difference between 61 and 40 is: 
The difference between 91 and 45 is: 
The difference between 61 and 15 is: 
The difference between 69 and 43 is: 
The difference between 61 and 45 is: 