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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 247 · 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. 1.2/12 + 1/3 =
  2. 2.1/3 − 3/11 =
  3. 3.5/9 + 7/11 =
  4. 4.4/11 − 1/6 =
  5. 5.2/7 + 1/5 =
  6. 6.2/10 + 9/12 =
  7. 7.6/8 + 4/6 =
  8. 8.5/10 − 1/3 =
  9. 9.1/6 + 4/5 =
  10. 10.1/12 + 6/11 =
  11. 11.2/7 + 2/3 =
  12. 12.3/6 − 3/10 =
  13. 13.6/7 + 3/12 =
  14. 14.5/8 + 1/2 =
  15. 15.1/2 + 1/10 =
  16. 16.6/11 − 1/2 =
  17. 17.7/12 + 3/6 =
  18. 18.1/2 + 2/7 =
  19. 19.3/6 − 5/12 =
  20. 20.4/5 − 6/10 =
  21. 21.2/12 + 1/4 =
  22. 22.1/3 + 1/6 =
  23. 23.1/3 + 1/3 =
  24. 24.2/6 − 1/4 =
  25. 25.1/2 + 1/2 =
  26. 26.1/3 + 2/10 =
  27. 27.3/4 − 6/11 =
  28. 28.2/6 + 6/10 =
  29. 29.7/10 + 1/5 =
  30. 30.5/7 − 2/3 =
  31. 31.6/7 − 2/3 =
  32. 32.7/12 − 3/9 =
  33. 33.5/10 + 3/6 =
  34. 34.2/7 + 2/3 =
  35. 35.6/8 + 1/3 =
  36. 36.5/10 − 1/3 =
  37. 37.2/7 + 5/7 =
  38. 38.4/8 − 1/6 =
  39. 39.1/5 + 5/10 =
  40. 40.2/12 + 1/2 =

Answer key

  1. 1/2
  2. 2/33
  3. 118/99
  4. 13/66
  5. 17/35
  6. 19/20
  7. 17/12
  8. 1/6
  9. 29/30
  10. 83/132
  11. 20/21
  12. 1/5
  13. 31/28
  14. 9/8
  15. 3/5
  16. 1/22
  17. 13/12
  18. 11/14
  19. 1/12
  20. 1/5
  21. 5/12
  22. 1/2
  23. 2/3
  24. 1/12
  25. 1
  26. 8/15
  27. 9/44
  28. 14/15
  29. 9/10
  30. 1/21
  31. 4/21
  32. 1/4
  33. 1
  34. 20/21
  35. 13/12
  36. 1/6
  37. 1
  38. 1/3
  39. 7/10
  40. 2/3

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