What is 5 - 2?
What is 7 - 3?
What is 6 - 1?
What is 8 - 4?
What is 9 - 5?
What is 7 - 2?
What is 6 - 3?
What is 8 - 6?
What is 9 - 1?
What is 5 - 3?
What is 4 - 2?
What is 3 - 1?
What is 9 - 7?
What is 8 - 5?
What is 7 - 6?