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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 683 · 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. 1.7/8 − 2/4 =
  2. 2.9/12 − 1/2 =
  3. 3.2/3 − 2/4 =
  4. 4.2/5 + 2/7 =
  5. 5.2/8 + 1/2 =
  6. 6.4/9 + 9/11 =
  7. 7.2/6 − 2/9 =
  8. 8.3/8 + 2/11 =
  9. 9.1/3 + 3/4 =
  10. 10.5/6 − 2/11 =
  11. 11.1/2 + 2/11 =
  12. 12.1/4 + 8/10 =
  13. 13.4/5 − 1/4 =
  14. 14.6/7 + 7/12 =
  15. 15.2/10 + 1/7 =
  16. 16.11/12 − 1/3 =
  17. 17.3/6 + 1/6 =
  18. 18.2/8 − 2/10 =
  19. 19.1/2 + 1/4 =
  20. 20.7/11 + 5/6 =
  21. 21.1/12 + 1/11 =
  22. 22.1/2 + 1/10 =
  23. 23.7/9 + 7/9 =
  24. 24.4/6 + 8/12 =
  25. 25.1/2 − 1/11 =
  26. 26.1/2 + 4/10 =
  27. 27.1/4 + 10/11 =
  28. 28.8/9 − 4/6 =
  29. 29.3/12 − 1/6 =
  30. 30.3/4 + 2/4 =
  31. 31.3/5 − 1/2 =
  32. 32.5/7 − 1/3 =
  33. 33.3/4 − 1/2 =
  34. 34.7/10 + 5/7 =
  35. 35.4/5 + 1/5 =
  36. 36.7/9 + 3/4 =
  37. 37.3/7 − 4/11 =
  38. 38.5/6 − 4/10 =
  39. 39.8/11 + 4/8 =
  40. 40.1/2 − 2/9 =

Answer key

  1. 3/8
  2. 1/4
  3. 1/6
  4. 24/35
  5. 3/4
  6. 125/99
  7. 1/9
  8. 49/88
  9. 13/12
  10. 43/66
  11. 15/22
  12. 21/20
  13. 11/20
  14. 121/84
  15. 12/35
  16. 7/12
  17. 2/3
  18. 1/20
  19. 3/4
  20. 97/66
  21. 23/132
  22. 3/5
  23. 14/9
  24. 4/3
  25. 9/22
  26. 9/10
  27. 51/44
  28. 2/9
  29. 1/12
  30. 5/4
  31. 1/10
  32. 8/21
  33. 1/4
  34. 99/70
  35. 1
  36. 55/36
  37. 5/77
  38. 13/30
  39. 27/22
  40. 5/18

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