Q: How much is 90 minus 59? A: 
Q: How much is 88 minus 35? A: 
Q: How much is 99 minus 59? A: 
Q: How much is 90 minus 50? A: 
Q: How much is 80 minus 59? A: 
Q: How much is 90 minus 59? A: 
Q: How much is 91 minus 50? A: 
Q: How much is 90 minus 59? A: 