Q: How much is 85 minus 79? A: 
Q: How much is 99 minus 45? A: 
Q: How much is 89 minus 79? A: 
Q: How much is 85 minus 70? A: 
Q: How much is 95 minus 79? A: 
Q: How much is 85 minus 39? A: 
Q: How much is 88 minus 72? A: 
Q: How much is 85 minus 79? A: 