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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 793 · 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. 1.1/3 + 1/10 =
  2. 2.1/2 + 2/7 =
  3. 3.1/2 + 4/9 =
  4. 4.1/5 + 1/4 =
  5. 5.6/7 + 6/10 =
  6. 6.1/8 + 5/10 =
  7. 7.10/11 − 3/8 =
  8. 8.1/3 + 2/4 =
  9. 9.6/7 − 9/11 =
  10. 10.10/12 + 1/2 =
  11. 11.7/12 + 1/8 =
  12. 12.9/11 + 1/7 =
  13. 13.1/12 + 2/4 =
  14. 14.1/12 + 2/7 =
  15. 15.2/4 + 1/4 =
  16. 16.1/3 + 2/11 =
  17. 17.1/2 − 1/4 =
  18. 18.5/7 − 1/2 =
  19. 19.4/5 + 1/3 =
  20. 20.1/2 + 8/12 =
  21. 21.1/2 − 1/5 =
  22. 22.6/9 − 2/7 =
  23. 23.3/5 + 2/8 =
  24. 24.3/10 + 7/8 =
  25. 25.8/12 + 1/4 =
  26. 26.4/12 + 11/12 =
  27. 27.2/10 − 1/6 =
  28. 28.5/7 + 2/12 =
  29. 29.1/5 − 1/7 =
  30. 30.6/7 + 1/4 =
  31. 31.9/10 + 3/12 =
  32. 32.6/9 − 2/8 =
  33. 33.1/2 + 2/5 =
  34. 34.5/6 + 1/4 =
  35. 35.4/5 − 5/7 =
  36. 36.7/11 − 1/8 =
  37. 37.7/9 + 5/10 =
  38. 38.2/9 + 8/11 =
  39. 39.6/8 − 1/6 =
  40. 40.1/2 + 2/9 =

Answer key

  1. 13/30
  2. 11/14
  3. 17/18
  4. 9/20
  5. 51/35
  6. 5/8
  7. 47/88
  8. 5/6
  9. 3/77
  10. 4/3
  11. 17/24
  12. 74/77
  13. 7/12
  14. 31/84
  15. 3/4
  16. 17/33
  17. 1/4
  18. 3/14
  19. 17/15
  20. 7/6
  21. 3/10
  22. 8/21
  23. 17/20
  24. 47/40
  25. 11/12
  26. 5/4
  27. 1/30
  28. 37/42
  29. 2/35
  30. 31/28
  31. 23/20
  32. 5/12
  33. 9/10
  34. 13/12
  35. 3/35
  36. 45/88
  37. 23/18
  38. 94/99
  39. 7/12
  40. 13/18

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