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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 850 · 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. 1.2/4 − 3/9 =
  2. 2.9/10 + 10/12 =
  3. 3.1/11 + 1/2 =
  4. 4.6/9 − 1/2 =
  5. 5.1/9 + 4/10 =
  6. 6.5/12 − 1/8 =
  7. 7.1/4 + 1/2 =
  8. 8.3/5 + 8/9 =
  9. 9.9/11 + 2/7 =
  10. 10.3/6 + 4/6 =
  11. 11.7/11 + 1/3 =
  12. 12.3/4 − 7/11 =
  13. 13.3/5 − 4/12 =
  14. 14.2/6 − 1/6 =
  15. 15.4/11 − 4/12 =
  16. 16.3/4 + 1/3 =
  17. 17.2/3 + 3/9 =
  18. 18.5/11 − 1/7 =
  19. 19.2/3 − 1/5 =
  20. 20.3/5 − 2/11 =
  21. 21.1/3 + 1/3 =
  22. 22.2/3 − 1/10 =
  23. 23.1/2 + 10/12 =
  24. 24.10/12 − 9/12 =
  25. 25.7/8 − 8/11 =
  26. 26.1/5 + 1/2 =
  27. 27.1/2 + 3/11 =
  28. 28.4/6 + 9/12 =
  29. 29.2/6 − 1/5 =
  30. 30.3/12 + 4/9 =
  31. 31.2/8 + 2/6 =
  32. 32.3/5 − 1/4 =
  33. 33.4/9 − 4/10 =
  34. 34.8/11 − 5/10 =
  35. 35.4/11 + 4/6 =
  36. 36.2/3 − 3/6 =
  37. 37.3/6 + 1/3 =
  38. 38.7/9 − 6/9 =
  39. 39.4/9 − 2/10 =
  40. 40.2/5 + 1/2 =

Answer key

  1. 1/6
  2. 26/15
  3. 13/22
  4. 1/6
  5. 23/45
  6. 7/24
  7. 3/4
  8. 67/45
  9. 85/77
  10. 7/6
  11. 32/33
  12. 5/44
  13. 4/15
  14. 1/6
  15. 1/33
  16. 13/12
  17. 1
  18. 24/77
  19. 7/15
  20. 23/55
  21. 2/3
  22. 17/30
  23. 4/3
  24. 1/12
  25. 13/88
  26. 7/10
  27. 17/22
  28. 17/12
  29. 2/15
  30. 25/36
  31. 7/12
  32. 7/20
  33. 2/45
  34. 5/22
  35. 34/33
  36. 1/6
  37. 5/6
  38. 1/9
  39. 11/45
  40. 9/10

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