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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 685 · 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. 1.5/11 + 2/9 =
  2. 2.3/6 + 3/7 =
  3. 3.2/4 + 2/7 =
  4. 4.5/6 − 2/5 =
  5. 5.6/8 + 1/3 =
  6. 6.8/12 + 1/3 =
  7. 7.6/7 − 4/11 =
  8. 8.1/7 + 2/4 =
  9. 9.2/12 + 8/11 =
  10. 10.2/6 + 2/10 =
  11. 11.4/11 + 4/12 =
  12. 12.8/9 + 2/5 =
  13. 13.9/12 + 7/9 =
  14. 14.1/3 − 1/4 =
  15. 15.5/11 − 2/5 =
  16. 16.2/6 + 3/4 =
  17. 17.8/10 − 3/6 =
  18. 18.1/12 + 3/5 =
  19. 19.10/11 − 2/3 =
  20. 20.1/3 + 10/11 =
  21. 21.2/4 + 3/11 =
  22. 22.4/6 − 1/3 =
  23. 23.1/2 − 3/11 =
  24. 24.6/12 + 2/10 =
  25. 25.2/5 + 1/4 =
  26. 26.1/2 − 1/4 =
  27. 27.1/2 + 2/4 =
  28. 28.2/12 + 8/9 =
  29. 29.7/8 + 6/8 =
  30. 30.2/10 + 3/7 =
  31. 31.4/9 + 1/2 =
  32. 32.6/8 + 4/8 =
  33. 33.1/10 + 3/7 =
  34. 34.6/7 − 1/2 =
  35. 35.1/2 + 1/2 =
  36. 36.5/8 + 1/2 =
  37. 37.3/5 + 2/3 =
  38. 38.1/2 − 1/6 =
  39. 39.8/10 − 5/10 =
  40. 40.4/10 − 1/8 =

Answer key

  1. 67/99
  2. 13/14
  3. 11/14
  4. 13/30
  5. 13/12
  6. 1
  7. 38/77
  8. 9/14
  9. 59/66
  10. 8/15
  11. 23/33
  12. 58/45
  13. 55/36
  14. 1/12
  15. 3/55
  16. 13/12
  17. 3/10
  18. 41/60
  19. 8/33
  20. 41/33
  21. 17/22
  22. 1/3
  23. 5/22
  24. 7/10
  25. 13/20
  26. 1/4
  27. 1
  28. 19/18
  29. 13/8
  30. 22/35
  31. 17/18
  32. 5/4
  33. 37/70
  34. 5/14
  35. 1
  36. 9/8
  37. 19/15
  38. 1/3
  39. 3/10
  40. 11/40

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