1. GCF

2. SWBAT find the gcf of two or more numbers and determine if the numbers are relatively prime Homework: GCF

3. Vocabulary 1.)Prime Numbers are numbers with exactly _____ factors, 1 and itself. Examples: 2.)Composite Numbers are numbers with _______ than 2 factors. Examples:

4. Vocabulary 3.)The number ______ is not prime nor composite because it only has ____ factor. 4.)The _____________ ________________ ____________________ (or gcf) of two or more numbers is the largest f actor that both numbers have in common. Example: The GCF of 12 and 18 is ________

5. I Do

6. I Do - You Help Find the GCF of 15 and 7 157 Relatively Prime means that the GCF of two numbers is _______

7. You Do - I Help Find the GCF of 8 and 24 824 Are these numbers relatively prime?

8. Partner Practice Find the GCF of 25 and 15 using factor houses

9. Bachelors Practice Find the GCF of 16 and 30 using factor houses

10. BP # 2 Find the GCF of 20 and 19 using factor houses

11. BP # 3 Find the GCF of 12 and 24 using factor houses

12. BP # 4 Find the GCF of 26 and 28 using factor houses

13. BP # 5 Which set of numbers from the last few problems that you tried are relatively prime? Explain

14. Masters Practice

15. Exit Ticket 1.) Find the GCF of 20 and 16 using factor houses

16. Exit Ticket 2. Find the GCF of 15 and 26 using factor houses

17. Exit Ticket 3.) Which set of numbers from above are relatively prime? (circle one) a.20 and 16 b.15 and 26

18. Extra