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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 385 · 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. 1.1/12 + 1/3 =
  2. 2.1/5 + 4/12 =
  3. 3.2/3 + 1/3 =
  4. 4.1/4 + 3/11 =
  5. 5.2/5 − 3/11 =
  6. 6.5/6 − 2/9 =
  7. 7.4/8 + 2/8 =
  8. 8.3/12 + 4/7 =
  9. 9.2/3 + 8/9 =
  10. 10.1/5 + 5/11 =
  11. 11.2/10 + 7/8 =
  12. 12.7/12 + 3/7 =
  13. 13.4/9 + 1/4 =
  14. 14.8/10 − 3/6 =
  15. 15.6/8 + 3/7 =
  16. 16.1/3 + 1/2 =
  17. 17.5/9 + 8/10 =
  18. 18.2/3 + 2/3 =
  19. 19.2/6 + 1/8 =
  20. 20.8/11 + 5/6 =
  21. 21.5/9 − 1/2 =
  22. 22.4/6 + 1/3 =
  23. 23.6/7 − 2/7 =
  24. 24.4/9 + 2/7 =
  25. 25.11/12 − 1/6 =
  26. 26.2/4 − 3/12 =
  27. 27.3/5 + 1/4 =
  28. 28.1/2 + 4/7 =
  29. 29.1/2 + 1/5 =
  30. 30.2/7 + 8/11 =
  31. 31.2/5 + 4/7 =
  32. 32.7/9 + 2/12 =
  33. 33.3/7 + 3/6 =
  34. 34.1/3 − 2/8 =
  35. 35.2/3 − 1/2 =
  36. 36.4/9 + 2/3 =
  37. 37.2/3 − 1/5 =
  38. 38.6/7 + 1/4 =
  39. 39.3/9 − 1/6 =
  40. 40.4/8 − 1/8 =

Answer key

  1. 5/12
  2. 8/15
  3. 1
  4. 23/44
  5. 7/55
  6. 11/18
  7. 3/4
  8. 23/28
  9. 14/9
  10. 36/55
  11. 43/40
  12. 85/84
  13. 25/36
  14. 3/10
  15. 33/28
  16. 5/6
  17. 61/45
  18. 4/3
  19. 11/24
  20. 103/66
  21. 1/18
  22. 1
  23. 4/7
  24. 46/63
  25. 3/4
  26. 1/4
  27. 17/20
  28. 15/14
  29. 7/10
  30. 78/77
  31. 34/35
  32. 17/18
  33. 13/14
  34. 1/12
  35. 1/6
  36. 10/9
  37. 7/15
  38. 31/28
  39. 1/6
  40. 3/8

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