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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 416 · 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. 1.9/12 − 2/12 =
  2. 2.11/12 + 1/2 =
  3. 3.9/10 − 8/9 =
  4. 4.6/7 + 2/5 =
  5. 5.1/2 + 1/7 =
  6. 6.5/6 − 2/6 =
  7. 7.3/8 + 1/2 =
  8. 8.5/8 − 2/6 =
  9. 9.6/10 − 2/9 =
  10. 10.1/4 + 2/12 =
  11. 11.2/6 + 1/2 =
  12. 12.1/2 + 2/10 =
  13. 13.4/9 + 2/9 =
  14. 14.7/9 + 2/4 =
  15. 15.8/9 − 2/10 =
  16. 16.3/9 + 3/11 =
  17. 17.1/2 + 1/2 =
  18. 18.9/11 − 5/7 =
  19. 19.3/5 − 3/7 =
  20. 20.5/6 − 1/8 =
  21. 21.8/10 − 3/8 =
  22. 22.3/5 + 4/12 =
  23. 23.4/5 + 6/9 =
  24. 24.2/6 + 8/10 =
  25. 25.4/5 + 7/11 =
  26. 26.1/2 + 2/4 =
  27. 27.2/3 − 2/7 =
  28. 28.4/9 + 5/6 =
  29. 29.1/2 + 5/6 =
  30. 30.2/3 + 2/3 =
  31. 31.1/3 + 5/11 =
  32. 32.5/10 − 2/7 =
  33. 33.3/8 + 6/11 =
  34. 34.2/3 + 3/5 =
  35. 35.3/10 − 1/7 =
  36. 36.6/7 + 3/11 =
  37. 37.2/9 + 2/8 =
  38. 38.5/10 + 3/6 =
  39. 39.1/6 + 6/12 =
  40. 40.2/4 + 3/4 =

Answer key

  1. 7/12
  2. 17/12
  3. 1/90
  4. 44/35
  5. 9/14
  6. 1/2
  7. 7/8
  8. 7/24
  9. 17/45
  10. 5/12
  11. 5/6
  12. 7/10
  13. 2/3
  14. 23/18
  15. 31/45
  16. 20/33
  17. 1
  18. 8/77
  19. 6/35
  20. 17/24
  21. 17/40
  22. 14/15
  23. 22/15
  24. 17/15
  25. 79/55
  26. 1
  27. 8/21
  28. 23/18
  29. 4/3
  30. 4/3
  31. 26/33
  32. 3/14
  33. 81/88
  34. 19/15
  35. 11/70
  36. 87/77
  37. 17/36
  38. 1
  39. 2/3
  40. 5/4

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