2. Fractions A quick help for those who have forgotten how to work with them.

3. Fraction Operations Addition Subtraction Multiplication Division Exit

4. Adding Fractions

5. In order to add fractions you must have common denominators and for the sake of this presentation you must also change all mixed numbers to improper fractions.

6. Adding Fractions Adding fractions with like denominators. When you have like denominators, you add the numerators, then reduce.

7. Adding Fractions Example 1

8. Adding Fractions Example 1

9. Adding Fractions When fractions have uncommon denominators multiply the denominators together, then multiply the numerator by the same number you multiplied the denominator by. This will always give you a common denominator.

10. Adding Fractions Example 2

11. Adding Fractions Example 2

12. Adding Fractions Example 2

13. Adding Fractions Example 2

14. Adding Fractions When you have mixed numbers change the mixed number to an improper fraction then add as before. However, if you start out with a mixed number you need to convert your answer to a mixed number as well.

15. Adding Fractions Example 3

16. Adding Fractions Example 3

17. Adding Fractions Example 3

18. Adding Fractions Example 3

19. Adding Fractions Example 3

20. Adding Fractions Try these:

21. Adding Fractions Answers:

22. Fraction Operations Addition Subtraction Multiplication Division Exit

23. Subtracting Fractions

24. In order to subtract fractions you must have common denominators and for the sake of this presentation you must also change all mixed numbers to improper fractions.

25. Subtracting Fractions Subtracting fractions with like denominators. When you have like denominators, you subtract the numerators, then reduce.

26. Subtracting Fractions Example 1

27. Subtracting Fractions Example 1

28. Subtracting Fractions When fractions have uncommon denominators multiply the denominators together, then multiply the numerator by the same number you multiplied the denominator by. This will always give you a common denominator

29. Subtracting Fractions Example 2

30. Subtracting Fractions Example 2

31. Subtracting Fractions Example 2

32. Subtracting Fractions Example 2

33. Subtracting Fractions When you have mixed numbers change the mixed number to an improper fraction then subtract as before. However, if you start out with a mixed number you need to convert your answer to a mixed number as well.

34. Subtracting Fractions Example 3

35. Subtracting Fractions Example 3

36. Subtracting Fractions Example 3

37. Subtracting Fractions Example 3

38. Subtracting Fractions Example 3

39. Subtracting Fractions Example 3

40. Subtracting Fractions Try these:

41. Subtracting Fractions Answers:

42. Fraction Operations Addition Subtraction Multiplication Division Exit

43. Multiplying Fractions

44. When multiplying fractions we don’t care about having common denominators. We just multiply straight across.

45. Multiplying Fractions Example 1

46. Multiplying Fractions Example 1

47. Multiplying Fractions Example 2

48. Multiplying Fractions Example 2

49. Multiplying Fractions When you have mixed numbers change the mixed number to an improper fraction, then multiply as before. However, if you start out with a mixed number you need to convert your answer to a mixed number as well.

50. Multiplying Fractions Example 3

51. Multiplying Fractions Example 3

52. Multiplying Fractions Example 3

53. Multiplying Fractions Example 3

54. Multiplying Fractions Example 3

55. Multiplying Fractions Try these:

56. Multiplying Fractions Answers:

57. Fraction Operations Addition Subtraction Multiplication Division Exit

58. Division

59. Dividing Fractions We never really divide fractions. We take the first fraction and multiply it by the reciprocal of the second fraction.

60. Dividing Fractions Hint for dividing fractions: To get the right answer, flip the fraction on the right.

61. Dividing Fractions Example 1

62. Dividing Fractions Example 1

63. Dividing Fractions Example 1

64. Dividing Fractions Example 2

65. Dividing Fractions Example 2

66. Dividing Fractions Example 2

67. Dividing Fractions When you have mixed numbers change the mixed number to an improper fraction, then divide as before. However, if you start out with a mixed number, you need to convert your answer to a mixed number as well.

68. Dividing Fractions Example 3

69. Dividing Fractions Example 3

70. Dividing Fractions Example 3

71. Dividing Fractions Example 3

72. Dividing Fractions Try these:

73. Dividing Fractions Answers:

74. Fraction Operations Addition Subtraction Multiplication Division Exit

75. The End