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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 154 · 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. 1.3/4 − 2/3 =
  2. 2.4/10 + 4/9 =
  3. 3.7/11 − 2/12 =
  4. 4.8/9 + 1/8 =
  5. 5.5/7 − 4/12 =
  6. 6.5/9 + 2/7 =
  7. 7.5/8 − 1/5 =
  8. 8.4/6 + 4/5 =
  9. 9.2/12 + 4/8 =
  10. 10.3/12 + 2/6 =
  11. 11.2/3 − 1/3 =
  12. 12.7/12 + 7/11 =
  13. 13.5/8 + 9/10 =
  14. 14.2/3 + 1/3 =
  15. 15.7/8 − 1/7 =
  16. 16.2/7 + 4/7 =
  17. 17.9/11 − 1/4 =
  18. 18.1/3 + 5/11 =
  19. 19.6/11 − 1/2 =
  20. 20.1/2 − 2/6 =
  21. 21.7/8 + 1/4 =
  22. 22.7/10 − 2/3 =
  23. 23.2/10 + 2/6 =
  24. 24.1/2 + 8/9 =
  25. 25.4/7 − 3/6 =
  26. 26.7/10 + 4/11 =
  27. 27.5/6 − 2/9 =
  28. 28.6/10 − 1/9 =
  29. 29.3/11 + 2/4 =
  30. 30.4/5 + 1/3 =
  31. 31.2/3 + 11/12 =
  32. 32.11/12 + 3/7 =
  33. 33.3/6 + 4/5 =
  34. 34.1/5 + 2/3 =
  35. 35.6/12 − 1/3 =
  36. 36.4/7 + 4/9 =
  37. 37.3/12 + 3/7 =
  38. 38.1/7 + 3/4 =
  39. 39.1/2 − 2/8 =
  40. 40.2/12 + 4/12 =

Answer key

  1. 1/12
  2. 38/45
  3. 31/66
  4. 73/72
  5. 8/21
  6. 53/63
  7. 17/40
  8. 22/15
  9. 2/3
  10. 7/12
  11. 1/3
  12. 161/132
  13. 61/40
  14. 1
  15. 41/56
  16. 6/7
  17. 25/44
  18. 26/33
  19. 1/22
  20. 1/6
  21. 9/8
  22. 1/30
  23. 8/15
  24. 25/18
  25. 1/14
  26. 117/110
  27. 11/18
  28. 22/45
  29. 17/22
  30. 17/15
  31. 19/12
  32. 113/84
  33. 13/10
  34. 13/15
  35. 1/6
  36. 64/63
  37. 19/28
  38. 25/28
  39. 1/4
  40. 1/2

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