Q: How much is 99 minus 10? A: 
Q: How much is 50 minus 46? A: 
Q: How much is 98 minus 10? A: 
Q: How much is 99 minus 12? A: 
Q: How much is 49 minus 10? A: 
Q: How much is 99 minus 70? A: 
Q: How much is 105 minus 16? A: 
Q: How much is 99 minus 10? A: 