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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 499 · 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. 1.3/9 − 1/8 =
  2. 2.1/10 + 9/12 =
  3. 3.3/4 + 1/5 =
  4. 4.8/12 + 2/7 =
  5. 5.7/11 + 1/11 =
  6. 6.2/5 − 3/9 =
  7. 7.2/3 − 3/10 =
  8. 8.5/10 + 2/4 =
  9. 9.4/10 − 1/6 =
  10. 10.5/9 − 2/8 =
  11. 11.1/2 + 4/10 =
  12. 12.3/6 + 1/4 =
  13. 13.10/11 − 1/9 =
  14. 14.1/5 + 1/3 =
  15. 15.2/3 − 3/7 =
  16. 16.3/5 + 1/2 =
  17. 17.4/11 − 1/3 =
  18. 18.2/3 − 4/12 =
  19. 19.7/8 + 4/8 =
  20. 20.2/3 + 4/6 =
  21. 21.8/9 − 2/4 =
  22. 22.2/11 + 2/6 =
  23. 23.3/4 − 4/8 =
  24. 24.9/10 + 1/4 =
  25. 25.2/4 − 1/3 =
  26. 26.9/10 − 1/2 =
  27. 27.8/9 − 7/8 =
  28. 28.1/2 + 1/2 =
  29. 29.1/3 + 2/3 =
  30. 30.3/7 + 7/11 =
  31. 31.1/7 + 3/5 =
  32. 32.10/12 − 2/5 =
  33. 33.1/4 + 11/12 =
  34. 34.7/10 − 3/12 =
  35. 35.2/3 + 8/10 =
  36. 36.2/9 + 4/6 =
  37. 37.3/5 + 5/6 =
  38. 38.5/8 + 5/7 =
  39. 39.6/8 − 1/2 =
  40. 40.1/3 + 1/2 =

Answer key

  1. 5/24
  2. 17/20
  3. 19/20
  4. 20/21
  5. 8/11
  6. 1/15
  7. 11/30
  8. 1
  9. 7/30
  10. 11/36
  11. 9/10
  12. 3/4
  13. 79/99
  14. 8/15
  15. 5/21
  16. 11/10
  17. 1/33
  18. 1/3
  19. 11/8
  20. 4/3
  21. 7/18
  22. 17/33
  23. 1/4
  24. 23/20
  25. 1/6
  26. 2/5
  27. 1/72
  28. 1
  29. 1
  30. 82/77
  31. 26/35
  32. 13/30
  33. 7/6
  34. 9/20
  35. 22/15
  36. 8/9
  37. 43/30
  38. 75/56
  39. 1/4
  40. 5/6

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