Q: What is 91 minus 78? A: 
Q: What is 29 minus 14? A: 
Q: What is 99 minus 78? A: 
Q: What is 91 minus 70? A: 
Q: What is 91 minus 78? A: 
Q: What is 91 minus 38? A: 
Q: What is 93 minus 70? A: 
Q: What is 91 minus 78? A: 