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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 404 · 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. 1.1/2 + 2/12 =
  2. 2.2/11 + 2/3 =
  3. 3.6/7 + 3/9 =
  4. 4.2/12 + 1/3 =
  5. 5.2/3 + 1/9 =
  6. 6.7/12 − 1/2 =
  7. 7.3/12 + 7/9 =
  8. 8.6/9 + 1/5 =
  9. 9.2/7 + 1/4 =
  10. 10.2/5 + 2/4 =
  11. 11.6/7 + 2/3 =
  12. 12.10/11 + 2/3 =
  13. 13.4/5 + 1/11 =
  14. 14.2/4 − 2/7 =
  15. 15.2/3 − 1/8 =
  16. 16.8/9 − 5/11 =
  17. 17.3/5 − 1/2 =
  18. 18.3/4 + 7/11 =
  19. 19.2/3 + 6/12 =
  20. 20.4/6 − 3/5 =
  21. 21.10/11 + 1/10 =
  22. 22.1/2 + 3/5 =
  23. 23.7/12 + 1/7 =
  24. 24.2/10 + 2/12 =
  25. 25.8/10 + 1/3 =
  26. 26.3/12 − 2/10 =
  27. 27.3/10 + 7/12 =
  28. 28.1/2 + 8/9 =
  29. 29.1/4 + 2/4 =
  30. 30.6/8 − 2/4 =
  31. 31.1/2 − 2/6 =
  32. 32.1/4 + 1/4 =
  33. 33.6/8 − 2/9 =
  34. 34.1/3 + 1/4 =
  35. 35.9/12 + 5/8 =
  36. 36.1/2 + 2/6 =
  37. 37.6/9 − 1/3 =
  38. 38.5/11 + 4/7 =
  39. 39.3/7 − 3/11 =
  40. 40.1/2 + 2/4 =

Answer key

  1. 2/3
  2. 28/33
  3. 25/21
  4. 1/2
  5. 7/9
  6. 1/12
  7. 37/36
  8. 13/15
  9. 15/28
  10. 9/10
  11. 32/21
  12. 52/33
  13. 49/55
  14. 3/14
  15. 13/24
  16. 43/99
  17. 1/10
  18. 61/44
  19. 7/6
  20. 1/15
  21. 111/110
  22. 11/10
  23. 61/84
  24. 11/30
  25. 17/15
  26. 1/20
  27. 53/60
  28. 25/18
  29. 3/4
  30. 1/4
  31. 1/6
  32. 1/2
  33. 19/36
  34. 7/12
  35. 11/8
  36. 5/6
  37. 1/3
  38. 79/77
  39. 12/77
  40. 1

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