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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 655 · 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. 1.4/7 + 3/9 =
  2. 2.1/4 + 3/9 =
  3. 3.2/4 + 1/5 =
  4. 4.8/9 + 4/8 =
  5. 5.4/7 + 1/8 =
  6. 6.1/3 + 1/6 =
  7. 7.10/12 + 1/2 =
  8. 8.2/7 + 1/4 =
  9. 9.2/3 + 2/3 =
  10. 10.3/7 + 2/5 =
  11. 11.4/7 + 4/11 =
  12. 12.3/11 + 4/11 =
  13. 13.5/12 − 2/7 =
  14. 14.8/9 − 6/7 =
  15. 15.2/3 + 1/3 =
  16. 16.3/7 + 2/3 =
  17. 17.4/6 + 2/3 =
  18. 18.2/11 − 1/12 =
  19. 19.1/6 + 1/9 =
  20. 20.1/3 + 1/2 =
  21. 21.1/5 + 8/9 =
  22. 22.4/12 + 2/7 =
  23. 23.11/12 + 3/6 =
  24. 24.9/11 − 1/3 =
  25. 25.11/12 + 9/12 =
  26. 26.3/5 + 3/6 =
  27. 27.1/12 + 4/7 =
  28. 28.4/10 − 1/9 =
  29. 29.2/8 + 4/8 =
  30. 30.3/11 + 1/10 =
  31. 31.3/8 − 4/11 =
  32. 32.8/11 + 3/12 =
  33. 33.1/9 + 5/8 =
  34. 34.3/8 + 1/7 =
  35. 35.2/11 + 1/7 =
  36. 36.8/10 + 2/7 =
  37. 37.1/2 + 2/4 =
  38. 38.2/4 − 1/12 =
  39. 39.6/12 + 1/4 =
  40. 40.5/7 + 1/2 =

Answer key

  1. 19/21
  2. 7/12
  3. 7/10
  4. 25/18
  5. 39/56
  6. 1/2
  7. 4/3
  8. 15/28
  9. 4/3
  10. 29/35
  11. 72/77
  12. 7/11
  13. 11/84
  14. 2/63
  15. 1
  16. 23/21
  17. 4/3
  18. 13/132
  19. 5/18
  20. 5/6
  21. 49/45
  22. 13/21
  23. 17/12
  24. 16/33
  25. 5/3
  26. 11/10
  27. 55/84
  28. 13/45
  29. 3/4
  30. 41/110
  31. 1/88
  32. 43/44
  33. 53/72
  34. 29/56
  35. 25/77
  36. 38/35
  37. 1
  38. 5/12
  39. 3/4
  40. 17/14

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