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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 789 · 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. 1.8/9 − 2/3 =
  2. 2.3/5 − 1/2 =
  3. 3.1/9 + 6/11 =
  4. 4.2/3 + 1/10 =
  5. 5.3/9 − 3/12 =
  6. 6.4/5 + 1/2 =
  7. 7.2/3 − 2/7 =
  8. 8.2/6 + 4/6 =
  9. 9.1/4 + 1/2 =
  10. 10.1/2 − 1/8 =
  11. 11.7/10 − 1/6 =
  12. 12.1/3 + 1/3 =
  13. 13.4/5 − 4/6 =
  14. 14.8/11 + 1/5 =
  15. 15.2/7 + 11/12 =
  16. 16.8/11 − 3/6 =
  17. 17.3/11 + 1/2 =
  18. 18.8/11 + 7/11 =
  19. 19.6/10 + 5/7 =
  20. 20.9/10 − 6/10 =
  21. 21.1/2 + 1/5 =
  22. 22.9/11 − 1/11 =
  23. 23.3/7 + 1/5 =
  24. 24.2/11 + 2/4 =
  25. 25.6/9 − 3/5 =
  26. 26.8/12 + 1/6 =
  27. 27.6/7 − 1/2 =
  28. 28.4/5 + 5/8 =
  29. 29.3/5 + 3/4 =
  30. 30.7/8 + 1/2 =
  31. 31.3/8 − 1/3 =
  32. 32.3/4 − 1/2 =
  33. 33.1/4 − 1/5 =
  34. 34.2/3 + 5/7 =
  35. 35.1/7 + 1/6 =
  36. 36.9/11 − 1/2 =
  37. 37.1/10 + 4/9 =
  38. 38.1/6 + 3/6 =
  39. 39.4/6 − 1/7 =
  40. 40.1/3 + 1/2 =

Answer key

  1. 2/9
  2. 1/10
  3. 65/99
  4. 23/30
  5. 1/12
  6. 13/10
  7. 8/21
  8. 1
  9. 3/4
  10. 3/8
  11. 8/15
  12. 2/3
  13. 2/15
  14. 51/55
  15. 101/84
  16. 5/22
  17. 17/22
  18. 15/11
  19. 46/35
  20. 3/10
  21. 7/10
  22. 8/11
  23. 22/35
  24. 15/22
  25. 1/15
  26. 5/6
  27. 5/14
  28. 57/40
  29. 27/20
  30. 11/8
  31. 1/24
  32. 1/4
  33. 1/20
  34. 29/21
  35. 13/42
  36. 7/22
  37. 49/90
  38. 2/3
  39. 11/21
  40. 5/6

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