Q: What is 28 minus 15? A: 
Q: What is 96 minus 68? A: 
Q: What is 26 minus 15? A: 
Q: What is 28 minus 16? A: 
Q: What is 68 minus 15? A: 
Q: What is 28 minus 15? A: 
Q: What is 32 minus 19? A: 
Q: What is 28 minus 15? A: 