The difference between 61 and 50 is: 
The difference between 62 and 29 is: 
The difference between 69 and 50 is: 
The difference between 61 and 50 is: 
The difference between 81 and 50 is: 
The difference between 61 and 40 is: 
The difference between 70 and 59 is: 
The difference between 61 and 50 is: 