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Adding and Subtracting Quick and Dirty Fractions Method!

Adding and Subtracting Quick and Dirty Fractions Method!. Adult Numeracy N2/L2.4: Use fractions to add, subtract, multiply and divide amounts or quantities Functional Mathematics Level 2: Add and subtract fractions - add and subtract using halves, thirds, quarters, fifths and tenths.

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Adding and Subtracting Quick and Dirty Fractions Method!

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  1. Adding and SubtractingQuick and Dirty Fractions Method! Adult Numeracy N2/L2.4: Use fractions to add, subtract, multiply and divide amounts or quantities Functional Mathematics Level 2: Add and subtract fractions - add and subtract using halves, thirds, quarters, fifths and tenths Kindly contributed to www.skillsworkshop.org by Keith Burnett, Sutton Coldfield College. ping.keith@googlemail.com To see more of Keith’s resources, including a traditional approach to adding and subtracting fractions visit http://www.slideshare.net/keithpeter Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  2. You can add two fractions by doing three multiplications and an addition! Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  3. Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  4. Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  5. Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  6. Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  7. Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  8. 3  3 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  9. 9 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  10. 9 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  11. 9 5  2 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  12. 9 10 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  13. 9 10 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  14. 9 10 5  3 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  15. 9 10 15 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  16. 9 10 + 15 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  17. 9 10 + 15 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  18. Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  19. An example that has denominators with a common factor… Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  20. Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  21. Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  22. 5  9 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  23. 45 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  24. 45 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  25. 45 24 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  26. 45 24 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  27. 45 24 54 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  28. 45 24 + 54 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  29. 45 24 + 54 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  30. Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  31. Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  32. 5 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  33. 5 18 Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  34. Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  35. You had to cancel down at the end because of the common factor… Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  36. Mixed numbers? Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  37. Mixed numbers? Just convert to improper fractions and carry on… Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  38. Subtraction? Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  39. Subtraction? Just subtract the top totals instead of adding… Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  40. Your turn… Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  41. Answer on next slide… Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  42. Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

  43. Make up some more questions and check them with your calculator Keith Burnett, Sutton Coldfield College, ping.keith@googlemail.com

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