Q: What is 30 minus 19? A: 
Q: What is 92 minus 72? A: 
Q: What is 39 minus 19? A: 
Q: What is 30 minus 10? A: 
Q: What is 30 minus 19? A: 
Q: What is 30 minus 19? A: 
Q: What is 36 minus 15? A: 
Q: What is 30 minus 19? A: 