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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 647 · 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. 1.2/6 − 1/12 =
  2. 2.1/7 + 2/6 =
  3. 3.5/8 + 3/8 =
  4. 4.2/3 − 1/7 =
  5. 5.1/2 + 2/5 =
  6. 6.1/2 + 1/2 =
  7. 7.1/2 − 1/6 =
  8. 8.1/4 + 4/6 =
  9. 9.6/11 − 2/9 =
  10. 10.7/10 + 5/8 =
  11. 11.8/10 − 1/11 =
  12. 12.2/5 + 1/9 =
  13. 13.4/7 + 7/12 =
  14. 14.1/9 + 4/8 =
  15. 15.4/5 − 7/11 =
  16. 16.5/9 + 1/3 =
  17. 17.1/4 + 1/2 =
  18. 18.3/4 + 6/9 =
  19. 19.1/12 + 10/11 =
  20. 20.8/10 − 2/4 =
  21. 21.1/2 + 1/2 =
  22. 22.2/8 + 7/12 =
  23. 23.7/9 − 6/12 =
  24. 24.3/5 − 2/8 =
  25. 25.5/8 + 1/3 =
  26. 26.2/3 + 5/8 =
  27. 27.1/9 + 4/6 =
  28. 28.1/2 + 1/4 =
  29. 29.4/5 − 6/11 =
  30. 30.3/4 + 3/12 =
  31. 31.7/8 + 1/7 =
  32. 32.1/2 + 1/4 =
  33. 33.5/12 + 2/9 =
  34. 34.1/7 + 1/2 =
  35. 35.1/5 + 2/11 =
  36. 36.5/7 − 2/7 =
  37. 37.6/12 − 1/9 =
  38. 38.10/11 + 2/3 =
  39. 39.2/4 + 1/2 =
  40. 40.1/9 + 1/9 =

Answer key

  1. 1/4
  2. 10/21
  3. 1
  4. 11/21
  5. 9/10
  6. 1
  7. 1/3
  8. 11/12
  9. 32/99
  10. 53/40
  11. 39/55
  12. 23/45
  13. 97/84
  14. 11/18
  15. 9/55
  16. 8/9
  17. 3/4
  18. 17/12
  19. 131/132
  20. 3/10
  21. 1
  22. 5/6
  23. 5/18
  24. 7/20
  25. 23/24
  26. 31/24
  27. 7/9
  28. 3/4
  29. 14/55
  30. 1
  31. 57/56
  32. 3/4
  33. 23/36
  34. 9/14
  35. 21/55
  36. 3/7
  37. 7/18
  38. 52/33
  39. 1
  40. 2/9

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