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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 298 · 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 + 3/12 =
  2. 2.1/2 − 1/5 =
  3. 3.1/5 + 2/10 =
  4. 4.3/5 + 4/9 =
  5. 5.7/12 − 1/9 =
  6. 6.1/3 − 1/6 =
  7. 7.2/7 + 3/7 =
  8. 8.6/11 + 6/11 =
  9. 9.3/4 + 1/3 =
  10. 10.3/4 + 2/3 =
  11. 11.1/4 + 3/7 =
  12. 12.3/7 + 2/10 =
  13. 13.1/3 + 2/3 =
  14. 14.5/8 − 1/4 =
  15. 15.1/3 + 3/8 =
  16. 16.3/4 + 2/9 =
  17. 17.1/2 + 2/3 =
  18. 18.2/3 + 1/4 =
  19. 19.8/9 − 1/5 =
  20. 20.1/6 − 1/12 =
  21. 21.7/8 + 1/11 =
  22. 22.2/3 + 2/3 =
  23. 23.2/6 + 1/4 =
  24. 24.7/11 − 2/4 =
  25. 25.4/12 − 1/5 =
  26. 26.2/8 + 2/3 =
  27. 27.4/7 − 1/7 =
  28. 28.1/6 + 2/5 =
  29. 29.2/3 + 2/8 =
  30. 30.1/2 + 1/2 =
  31. 31.4/12 + 2/3 =
  32. 32.2/3 + 2/11 =
  33. 33.3/4 − 1/3 =
  34. 34.5/7 + 5/6 =
  35. 35.7/8 + 7/10 =
  36. 36.6/7 + 5/11 =
  37. 37.5/8 + 5/7 =
  38. 38.7/12 + 6/8 =
  39. 39.6/7 + 4/5 =
  40. 40.4/6 + 1/7 =

Answer key

  1. 3/4
  2. 3/10
  3. 2/5
  4. 47/45
  5. 17/36
  6. 1/6
  7. 5/7
  8. 12/11
  9. 13/12
  10. 17/12
  11. 19/28
  12. 22/35
  13. 1
  14. 3/8
  15. 17/24
  16. 35/36
  17. 7/6
  18. 11/12
  19. 31/45
  20. 1/12
  21. 85/88
  22. 4/3
  23. 7/12
  24. 3/22
  25. 2/15
  26. 11/12
  27. 3/7
  28. 17/30
  29. 11/12
  30. 1
  31. 1
  32. 28/33
  33. 5/12
  34. 65/42
  35. 63/40
  36. 101/77
  37. 75/56
  38. 4/3
  39. 58/35
  40. 17/21

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