Q: What is the result of 80 minus 69? A: 
Q: What is the result of 20 minus 18? A: 
Q: What is the result of 89 minus 69? A: 
Q: What is the result of 80 minus 60? A: 
Q: What is the result of 80 minus 69? A: 
Q: What is the result of 80 minus 19? A: 
Q: What is the result of 89 minus 68? A: 
Q: What is the result of 80 minus 69? A: 