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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 491 · 40 sums
TalentJR

The trick (Urdhva Tiryagbhyam): Top: multiply crosswise — first top × second bottom, then first bottom × second top — and add (or subtract). Bottom: multiply the two bottoms. Simplify by dividing top and bottom by their HCF. Give the answer as a fraction like 17/12.

NameDateTime takenScore ___ / 40
  1. 1.4/7 − 2/8 =
  2. 2.1/12 + 3/4 =
  3. 3.2/3 − 2/4 =
  4. 4.5/10 + 1/3 =
  5. 5.2/3 + 1/2 =
  6. 6.1/2 + 2/3 =
  7. 7.7/11 + 4/6 =
  8. 8.5/8 − 2/4 =
  9. 9.1/2 + 9/11 =
  10. 10.5/12 + 2/3 =
  11. 11.2/3 − 1/2 =
  12. 12.3/5 + 2/5 =
  13. 13.1/3 + 8/10 =
  14. 14.6/9 − 6/11 =
  15. 15.3/6 + 3/6 =
  16. 16.8/9 − 6/12 =
  17. 17.5/6 + 1/4 =
  18. 18.4/5 − 2/8 =
  19. 19.1/2 + 3/11 =
  20. 20.1/2 − 2/6 =
  21. 21.4/8 + 5/6 =
  22. 22.4/6 + 1/2 =
  23. 23.5/10 + 2/5 =
  24. 24.5/8 − 1/2 =
  25. 25.6/9 + 2/7 =
  26. 26.6/7 − 4/9 =
  27. 27.9/10 + 2/3 =
  28. 28.4/12 + 3/9 =
  29. 29.3/4 + 9/10 =
  30. 30.7/8 − 1/3 =
  31. 31.1/2 + 1/2 =
  32. 32.2/4 + 10/11 =
  33. 33.1/2 − 1/3 =
  34. 34.5/11 − 2/5 =
  35. 35.1/2 + 1/2 =
  36. 36.5/6 − 3/11 =
  37. 37.4/5 + 5/6 =
  38. 38.1/5 + 2/7 =
  39. 39.1/9 + 1/3 =
  40. 40.4/7 − 1/3 =

Answer key

  1. 9/28
  2. 5/6
  3. 1/6
  4. 5/6
  5. 7/6
  6. 7/6
  7. 43/33
  8. 1/8
  9. 29/22
  10. 13/12
  11. 1/6
  12. 1
  13. 17/15
  14. 4/33
  15. 1
  16. 7/18
  17. 13/12
  18. 11/20
  19. 17/22
  20. 1/6
  21. 4/3
  22. 7/6
  23. 9/10
  24. 1/8
  25. 20/21
  26. 26/63
  27. 47/30
  28. 2/3
  29. 33/20
  30. 13/24
  31. 1
  32. 31/22
  33. 1/6
  34. 3/55
  35. 1
  36. 37/66
  37. 49/30
  38. 17/35
  39. 4/9
  40. 5/21

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