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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 922 · 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. 1.7/11 + 4/7 =
  2. 2.1/10 + 8/12 =
  3. 3.1/3 + 2/6 =
  4. 4.2/4 − 3/11 =
  5. 5.1/8 + 1/10 =
  6. 6.1/3 + 8/12 =
  7. 7.1/2 + 1/10 =
  8. 8.1/2 + 1/10 =
  9. 9.2/4 + 3/7 =
  10. 10.3/6 + 5/6 =
  11. 11.4/11 + 6/12 =
  12. 12.2/3 + 5/12 =
  13. 13.9/10 − 1/8 =
  14. 14.1/4 + 1/3 =
  15. 15.3/5 − 3/10 =
  16. 16.6/9 + 2/7 =
  17. 17.5/7 + 4/12 =
  18. 18.4/6 + 5/6 =
  19. 19.2/5 − 1/7 =
  20. 20.7/8 − 5/7 =
  21. 21.3/5 − 1/7 =
  22. 22.8/9 − 5/8 =
  23. 23.4/8 + 7/8 =
  24. 24.1/6 + 3/9 =
  25. 25.1/2 − 3/10 =
  26. 26.2/9 + 1/3 =
  27. 27.3/5 − 2/11 =
  28. 28.8/12 + 1/4 =
  29. 29.3/12 + 3/4 =
  30. 30.1/7 + 1/2 =
  31. 31.2/9 + 2/3 =
  32. 32.3/11 + 3/10 =
  33. 33.3/6 + 11/12 =
  34. 34.1/2 − 2/8 =
  35. 35.4/9 − 3/8 =
  36. 36.1/5 + 1/4 =
  37. 37.1/2 + 1/3 =
  38. 38.3/11 + 1/3 =
  39. 39.3/10 + 3/8 =
  40. 40.9/10 − 1/3 =

Answer key

  1. 93/77
  2. 23/30
  3. 2/3
  4. 5/22
  5. 9/40
  6. 1
  7. 3/5
  8. 3/5
  9. 13/14
  10. 4/3
  11. 19/22
  12. 13/12
  13. 31/40
  14. 7/12
  15. 3/10
  16. 20/21
  17. 22/21
  18. 3/2
  19. 9/35
  20. 9/56
  21. 16/35
  22. 19/72
  23. 11/8
  24. 1/2
  25. 1/5
  26. 5/9
  27. 23/55
  28. 11/12
  29. 1
  30. 9/14
  31. 8/9
  32. 63/110
  33. 17/12
  34. 1/4
  35. 5/72
  36. 9/20
  37. 5/6
  38. 20/33
  39. 27/40
  40. 17/30

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