Student Name:
Name That Prime Practice
1. What is a prime number?
2. Is 33 a prime number? Explain why or why not.
3. Is 15 a prime number? Explain why or why not.
4. Is 19 a prime number? Explain why or why not.
5. Is 51 a prime number? Explain why or why not.
6. Explain how you can use divisibility rules to prove that 123 is not prime.
Be sure to check your answers and look for mistakes!