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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 18 · 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 − 2/10 =
  2. 2.2/6 − 2/9 =
  3. 3.6/9 − 1/2 =
  4. 4.1/2 − 3/10 =
  5. 5.4/7 + 2/5 =
  6. 6.4/8 − 1/3 =
  7. 7.1/5 + 11/12 =
  8. 8.1/2 − 4/10 =
  9. 9.1/3 + 2/3 =
  10. 10.6/9 + 7/9 =
  11. 11.4/12 − 3/11 =
  12. 12.3/8 + 4/7 =
  13. 13.5/6 − 4/10 =
  14. 14.5/9 − 1/2 =
  15. 15.1/5 + 3/5 =
  16. 16.4/12 − 3/11 =
  17. 17.8/11 + 4/7 =
  18. 18.8/10 − 2/3 =
  19. 19.2/4 + 1/2 =
  20. 20.4/5 − 3/9 =
  21. 21.3/12 + 8/10 =
  22. 22.4/5 + 1/4 =
  23. 23.1/2 − 1/6 =
  24. 24.7/11 − 1/5 =
  25. 25.2/8 − 1/5 =
  26. 26.9/12 − 5/9 =
  27. 27.2/5 + 4/5 =
  28. 28.6/7 − 2/6 =
  29. 29.5/8 − 4/10 =
  30. 30.3/11 + 1/2 =
  31. 31.7/12 − 1/5 =
  32. 32.1/4 + 3/7 =
  33. 33.5/8 + 4/8 =
  34. 34.2/7 + 2/4 =
  35. 35.4/6 − 2/4 =
  36. 36.2/8 + 4/5 =
  37. 37.3/7 − 2/11 =
  38. 38.4/5 + 5/10 =
  39. 39.4/5 + 1/2 =
  40. 40.4/7 + 2/4 =

Answer key

  1. 2/15
  2. 1/9
  3. 1/6
  4. 1/5
  5. 34/35
  6. 1/6
  7. 67/60
  8. 1/10
  9. 1
  10. 13/9
  11. 2/33
  12. 53/56
  13. 13/30
  14. 1/18
  15. 4/5
  16. 2/33
  17. 100/77
  18. 2/15
  19. 1
  20. 7/15
  21. 21/20
  22. 21/20
  23. 1/3
  24. 24/55
  25. 1/20
  26. 7/36
  27. 6/5
  28. 11/21
  29. 9/40
  30. 17/22
  31. 23/60
  32. 19/28
  33. 9/8
  34. 11/14
  35. 1/6
  36. 21/20
  37. 19/77
  38. 13/10
  39. 13/10
  40. 15/14

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