Q: What is 81 minus 51? A: 
Q: What is 83 minus 44? A: 
Q: What is 89 minus 51? A: 
Q: What is 81 minus 50? A: 
Q: What is 91 minus 51? A: 
Q: What is 81 minus 51? A: 
Q: What is 80 minus 53? A: 
Q: What is 81 minus 51? A: 