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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 643 · 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. 1.1/2 − 1/4 =
  2. 2.2/4 + 5/10 =
  3. 3.9/10 + 6/10 =
  4. 4.1/2 + 5/9 =
  5. 5.7/8 − 4/5 =
  6. 6.1/2 − 1/11 =
  7. 7.9/12 − 7/10 =
  8. 8.2/7 + 2/3 =
  9. 9.2/11 + 11/12 =
  10. 10.1/2 + 1/2 =
  11. 11.1/2 + 1/3 =
  12. 12.8/10 + 2/3 =
  13. 13.8/9 + 3/4 =
  14. 14.6/7 + 8/9 =
  15. 15.1/4 − 1/5 =
  16. 16.1/2 + 6/11 =
  17. 17.1/2 + 1/3 =
  18. 18.2/11 + 2/5 =
  19. 19.7/9 − 3/8 =
  20. 20.6/7 − 7/11 =
  21. 21.1/6 + 2/8 =
  22. 22.1/10 + 2/7 =
  23. 23.5/6 + 3/5 =
  24. 24.1/2 + 4/11 =
  25. 25.4/6 − 5/11 =
  26. 26.1/3 + 3/12 =
  27. 27.4/7 + 1/3 =
  28. 28.1/2 + 1/2 =
  29. 29.2/8 + 2/3 =
  30. 30.4/9 + 1/8 =
  31. 31.2/3 + 3/7 =
  32. 32.4/5 − 3/4 =
  33. 33.8/11 + 3/9 =
  34. 34.1/3 + 6/12 =
  35. 35.3/12 + 4/11 =
  36. 36.1/2 + 2/3 =
  37. 37.1/2 − 3/7 =
  38. 38.3/4 + 5/8 =
  39. 39.3/4 + 3/4 =
  40. 40.1/4 + 1/6 =

Answer key

  1. 1/4
  2. 1
  3. 3/2
  4. 19/18
  5. 3/40
  6. 9/22
  7. 1/20
  8. 20/21
  9. 145/132
  10. 1
  11. 5/6
  12. 22/15
  13. 59/36
  14. 110/63
  15. 1/20
  16. 23/22
  17. 5/6
  18. 32/55
  19. 29/72
  20. 17/77
  21. 5/12
  22. 27/70
  23. 43/30
  24. 19/22
  25. 7/33
  26. 7/12
  27. 19/21
  28. 1
  29. 11/12
  30. 41/72
  31. 23/21
  32. 1/20
  33. 35/33
  34. 5/6
  35. 27/44
  36. 7/6
  37. 1/14
  38. 11/8
  39. 3/2
  40. 5/12

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