1. Prime Factorization How can a number be broken down into smaller parts?

2. Start thinking

3. Factor Pairs You just worked with factor pairs. 2 and 15 are factor pairs of 30. Example

5. Factor Pair Example

6. Prime VS. Composite

7. Prime Vs. Composite Prime Number = has only two factors, one and itself Composite Number = has more than two factors One = neither prime nor composite.

8. Use a Factor Tree or Stack Method to complete prime factorization Hint: Always start with the lowest prime number 2 when factoring. If 2 doesn’t divide in, then try 3. Write the prime factorization of 48.

9. Write the prime factorization of 45.

10. Mini-Assessment

12. Summary How can a number be broken down into smaller parts?