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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 878 · 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. 1.1/3 + 2/12 =
  2. 2.4/7 + 2/11 =
  3. 3.7/8 + 2/4 =
  4. 4.6/11 + 1/5 =
  5. 5.10/12 − 6/12 =
  6. 6.2/6 + 1/3 =
  7. 7.2/4 − 1/3 =
  8. 8.1/4 + 1/3 =
  9. 9.1/4 + 4/5 =
  10. 10.2/4 − 5/12 =
  11. 11.8/12 + 4/6 =
  12. 12.1/4 + 2/3 =
  13. 13.2/8 − 1/9 =
  14. 14.5/9 + 1/3 =
  15. 15.2/3 + 1/2 =
  16. 16.2/3 + 6/9 =
  17. 17.1/5 + 1/2 =
  18. 18.7/10 + 2/6 =
  19. 19.7/12 + 1/2 =
  20. 20.5/12 − 2/9 =
  21. 21.1/2 + 8/10 =
  22. 22.2/3 + 4/7 =
  23. 23.1/4 + 4/7 =
  24. 24.2/3 − 1/6 =
  25. 25.4/8 + 2/6 =
  26. 26.1/2 − 3/12 =
  27. 27.1/3 + 1/5 =
  28. 28.2/3 + 7/12 =
  29. 29.1/2 − 4/11 =
  30. 30.3/8 + 2/11 =
  31. 31.1/5 + 7/8 =
  32. 32.3/9 + 4/7 =
  33. 33.2/5 + 8/12 =
  34. 34.1/3 + 4/6 =
  35. 35.2/6 + 3/8 =
  36. 36.2/6 + 4/5 =
  37. 37.1/2 + 6/8 =
  38. 38.2/4 + 3/11 =
  39. 39.1/2 − 3/11 =
  40. 40.2/3 + 1/3 =

Answer key

  1. 1/2
  2. 58/77
  3. 11/8
  4. 41/55
  5. 1/3
  6. 2/3
  7. 1/6
  8. 7/12
  9. 21/20
  10. 1/12
  11. 4/3
  12. 11/12
  13. 5/36
  14. 8/9
  15. 7/6
  16. 4/3
  17. 7/10
  18. 31/30
  19. 13/12
  20. 7/36
  21. 13/10
  22. 26/21
  23. 23/28
  24. 1/2
  25. 5/6
  26. 1/4
  27. 8/15
  28. 5/4
  29. 3/22
  30. 49/88
  31. 43/40
  32. 19/21
  33. 16/15
  34. 1
  35. 17/24
  36. 17/15
  37. 5/4
  38. 17/22
  39. 5/22
  40. 1

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