Q: What is 73 minus 70? A: 
Q: What is 47 minus 28? A: 
Q: What is 79 minus 70? A: 
Q: What is 73 minus 70? A: 
Q: What is 83 minus 70? A: 
Q: What is 73 minus 20? A: 
Q: What is 81 minus 78? A: 
Q: What is 73 minus 70? A: 