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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 670 · 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. 1.4/12 + 4/10 =
  2. 2.2/3 + 6/11 =
  3. 3.4/5 + 1/4 =
  4. 4.1/7 + 8/12 =
  5. 5.6/8 − 1/5 =
  6. 6.1/11 + 5/6 =
  7. 7.2/4 + 6/12 =
  8. 8.1/2 + 1/12 =
  9. 9.6/8 − 6/11 =
  10. 10.1/2 + 3/5 =
  11. 11.2/5 + 9/11 =
  12. 12.11/12 + 1/4 =
  13. 13.1/2 + 2/8 =
  14. 14.9/10 − 3/11 =
  15. 15.1/12 + 4/8 =
  16. 16.1/4 + 3/10 =
  17. 17.4/5 + 1/3 =
  18. 18.2/9 − 1/7 =
  19. 19.2/4 + 1/3 =
  20. 20.4/8 + 2/9 =
  21. 21.1/2 + 11/12 =
  22. 22.1/7 + 6/8 =
  23. 23.3/6 + 9/12 =
  24. 24.3/5 − 2/12 =
  25. 25.1/6 + 1/6 =
  26. 26.1/3 + 1/3 =
  27. 27.2/8 + 2/7 =
  28. 28.3/4 − 1/2 =
  29. 29.1/2 + 3/11 =
  30. 30.8/9 + 2/11 =
  31. 31.2/4 − 1/8 =
  32. 32.3/10 + 1/10 =
  33. 33.2/5 + 2/4 =
  34. 34.3/7 − 2/8 =
  35. 35.9/10 + 1/6 =
  36. 36.3/5 + 5/8 =
  37. 37.4/12 + 1/3 =
  38. 38.1/12 + 10/12 =
  39. 39.1/2 + 2/3 =
  40. 40.2/3 − 3/6 =

Answer key

  1. 11/15
  2. 40/33
  3. 21/20
  4. 17/21
  5. 11/20
  6. 61/66
  7. 1
  8. 7/12
  9. 9/44
  10. 11/10
  11. 67/55
  12. 7/6
  13. 3/4
  14. 69/110
  15. 7/12
  16. 11/20
  17. 17/15
  18. 5/63
  19. 5/6
  20. 13/18
  21. 17/12
  22. 25/28
  23. 5/4
  24. 13/30
  25. 1/3
  26. 2/3
  27. 15/28
  28. 1/4
  29. 17/22
  30. 106/99
  31. 3/8
  32. 2/5
  33. 9/10
  34. 5/28
  35. 16/15
  36. 49/40
  37. 2/3
  38. 11/12
  39. 7/6
  40. 1/6

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