Q: How much is 78 minus 16? A: 
Q: How much is 34 minus 15? A: 
Q: How much is 77 minus 16? A: 
Q: How much is 78 minus 16? A: 
Q: How much is 48 minus 16? A: 
Q: How much is 78 minus 66? A: 
Q: How much is 81 minus 19? A: 
Q: How much is 78 minus 16? A: 