Q: What is the result of 63 minus 10? A: 
Q: What is the result of 69 minus 12? A: 
Q: What is the result of 64 minus 10? A: 
Q: What is the result of 63 minus 12? A: 
Q: What is the result of 63 minus 10? A: 
Q: What is the result of 63 minus 30? A: 
Q: What is the result of 71 minus 18? A: 
Q: What is the result of 63 minus 10? A: 