Q: What is 89 minus 13? A: 
Q: What is 37 minus 20? A: 
Q: What is 84 minus 13? A: 
Q: What is 89 minus 16? A: 
Q: What is 69 minus 13? A: 
Q: What is 89 minus 63? A: 
Q: What is 94 minus 18? A: 
Q: What is 89 minus 13? A: 