Q: What is 64 minus 38? A: 
Q: What is 71 minus 18? A: 
Q: What is 69 minus 38? A: 
Q: What is 64 minus 31? A: 
Q: What is 64 minus 38? A: 
Q: What is 64 minus 48? A: 
Q: What is 66 minus 30? A: 
Q: What is 64 minus 38? A: 