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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 308 · 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. 1.8/9 − 2/9 =
  2. 2.3/8 + 5/12 =
  3. 3.8/10 − 1/3 =
  4. 4.7/11 + 3/4 =
  5. 5.8/9 − 4/12 =
  6. 6.3/6 − 1/8 =
  7. 7.4/10 + 5/6 =
  8. 8.1/5 + 8/9 =
  9. 9.5/10 + 1/11 =
  10. 10.7/12 − 2/4 =
  11. 11.1/2 + 1/2 =
  12. 12.1/6 + 2/4 =
  13. 13.3/5 − 1/3 =
  14. 14.9/10 + 2/7 =
  15. 15.8/12 − 2/10 =
  16. 16.3/5 − 4/10 =
  17. 17.1/5 + 2/5 =
  18. 18.1/2 + 2/3 =
  19. 19.1/7 + 1/3 =
  20. 20.2/3 + 2/3 =
  21. 21.3/9 − 2/9 =
  22. 22.11/12 − 2/7 =
  23. 23.3/4 + 1/2 =
  24. 24.10/11 − 3/10 =
  25. 25.2/5 − 1/3 =
  26. 26.7/8 − 3/8 =
  27. 27.1/12 + 3/9 =
  28. 28.6/7 − 1/4 =
  29. 29.2/5 + 1/2 =
  30. 30.1/2 + 4/6 =
  31. 31.1/7 + 4/5 =
  32. 32.2/4 + 1/4 =
  33. 33.2/3 + 3/6 =
  34. 34.1/8 + 4/6 =
  35. 35.4/5 − 1/4 =
  36. 36.2/3 + 1/9 =
  37. 37.4/9 − 3/9 =
  38. 38.1/8 + 3/6 =
  39. 39.1/2 − 1/7 =
  40. 40.1/3 + 1/5 =

Answer key

  1. 2/3
  2. 19/24
  3. 7/15
  4. 61/44
  5. 5/9
  6. 3/8
  7. 37/30
  8. 49/45
  9. 13/22
  10. 1/12
  11. 1
  12. 2/3
  13. 4/15
  14. 83/70
  15. 7/15
  16. 1/5
  17. 3/5
  18. 7/6
  19. 10/21
  20. 4/3
  21. 1/9
  22. 53/84
  23. 5/4
  24. 67/110
  25. 1/15
  26. 1/2
  27. 5/12
  28. 17/28
  29. 9/10
  30. 7/6
  31. 33/35
  32. 3/4
  33. 7/6
  34. 19/24
  35. 11/20
  36. 7/9
  37. 1/9
  38. 5/8
  39. 5/14
  40. 8/15

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