1. Lesson 5-2 Simplifying Fractions Thanks, Marissa, for suggesting to change the font to Gray.

2. Factor  A number that divides evenly into another. Factors of 24 are 1,2, 3, 4, 6, 8, 12 and 24.

3. What are the factors of 9? Factors of 9 are 1, 3 and 9. Factors of 9 are 1, 3 and 9.

4. What are the factors of 10? Factors of 10 are 1, 2, 5 and 10. Factors of 10 are 1, 2, 5 and 10.

5. What are the factors of 7? Factors of 7 are 1 and 7.

6. What are the factors of 56? Factors of 56 are 1, 2, 4, 7, 8, 14, 28, and 56.

7. Common Factor When two numbers have the same factor it is called a common factor. A common factor of 12 and 6 is 3.

8. Name a Common Factor of 9 and 27? 1, 3, 9

9. Name a Common Factor of 4 and 8? 1, 2, 4

10. 1, 2, 4

11. Name a Common Factor of 15 and 30? 1, 3, 5, 15

12. Name a Common Factor of 12 and 48? 1, 2, 3, 4, 6, 12

13. Name a Common Factor of 9 and 21? 1 and 3

14. Name a Common Factor of 10 and 25? 1 and 5

15. Name a Common Factor of 3 and 4? 1

16. Simplest Form  When the only common factor of the numerator and denominator is 1, the fraction is in simplest form. 3 4 3 4 ÷ 1 1 =

17. Greatest Common Factor  The greatest common factor is the largest factor shared by two numbers. 12 = 1, 2, 3, 4, 6, 12 18 = 1, 2, 3, 6, 9, 18

18. What is the Greatest Common Factor? 8 = 1, 2, 4, 8 12 = 1, 2, 3, 4, 6, 12

19. What is the Greatest Common Factor? 8 = 1, 2, 4, 8 14 = 1, 2, 7,14

20. What is the Greatest Common Factor? 6 = 1, 2, 3, 6 18 = 1, 2, 3, 6, 9, 15

21. What is the Greatest Common Factor? 6 = 1, 2, 3, 6 12 = 1, 2, 3, 4, 6, 12

22. What is the Greatest Common Factor? 8 = 1, 2, 4, 8 16 = 1, 2, 4, 8, 16

23. What is the Greatest Common Factor? 8 = 1, 2, 4, 8 10 = 1, 2, 5, 10

24. What is the Greatest Common Factor? 3 = 1, 3 6 = 1, 2, 3, 6

25. What is the Greatest Common Factor? 4 = 1, 2, 4 6 = 1, 2, 3, 6

26. What is the Greatest Common Factor? 7 = 1, 7, 21 = 1, 3, 7, 21

27. What is the Greatest Common Factor? 15 = 1, 3, 5, 15 24 = 1, 2, 3, 8, 12, 24

28. How to Find the Simplest Form of a Fraction  Step 1: Find the GCF of the numerator and denominator  Step 2: Divide the N and D by the GCF 12 18 2 3 ÷ 6 6 =

29. Simplify or Reduce This Fraction 9 21 3 7 ÷ 3 3 =

30. Simplify or Reduce This Fraction 12 20 3 5 ÷ 4 4 =

31. Simplify or Reduce This Fraction 10 15 2 3 ÷ 5 5 =

32. Simplify or Reduce This Fraction 10 16 5 8 ÷ 2 2 =

33. Simplify or Reduce This Fraction 12 16 3 4 ÷ 4 4 =

34. Simplify or Reduce This Fraction 3 12 1 4 ÷ 3 3 =

35. Simplify or Reduce This Fraction 2 8 1 4 ÷ 2 2 =

36. 2 4 1 2 ÷ 2 2 =

37. 6 9 2 3 ÷ 3 3 =

38. 6 8 3 4 ÷ 2 2 =