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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 412 · 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. 1.8/12 + 2/3 =
  2. 2.1/2 + 9/10 =
  3. 3.9/10 + 7/12 =
  4. 4.7/9 − 1/2 =
  5. 5.1/4 + 9/12 =
  6. 6.2/3 + 9/11 =
  7. 7.1/8 + 1/2 =
  8. 8.5/11 + 2/4 =
  9. 9.1/11 + 8/9 =
  10. 10.1/3 − 2/7 =
  11. 11.2/11 + 1/10 =
  12. 12.7/9 − 2/4 =
  13. 13.3/4 + 4/11 =
  14. 14.2/11 + 1/9 =
  15. 15.3/5 − 1/4 =
  16. 16.2/6 + 4/11 =
  17. 17.5/8 + 3/10 =
  18. 18.9/11 + 4/10 =
  19. 19.7/9 − 1/8 =
  20. 20.2/4 + 7/10 =
  21. 21.3/4 − 2/7 =
  22. 22.2/6 + 1/2 =
  23. 23.2/11 + 7/10 =
  24. 24.1/3 + 6/8 =
  25. 25.1/12 + 1/2 =
  26. 26.1/6 + 2/12 =
  27. 27.2/3 + 3/7 =
  28. 28.2/9 + 1/9 =
  29. 29.1/9 + 1/3 =
  30. 30.1/12 + 1/4 =
  31. 31.3/11 + 3/4 =
  32. 32.1/3 − 1/8 =
  33. 33.2/4 + 5/11 =
  34. 34.6/10 + 5/7 =
  35. 35.3/12 + 1/3 =
  36. 36.2/4 + 1/2 =
  37. 37.5/7 − 2/3 =
  38. 38.3/5 + 2/8 =
  39. 39.1/2 + 2/4 =
  40. 40.6/12 + 2/10 =

Answer key

  1. 4/3
  2. 7/5
  3. 89/60
  4. 5/18
  5. 1
  6. 49/33
  7. 5/8
  8. 21/22
  9. 97/99
  10. 1/21
  11. 31/110
  12. 5/18
  13. 49/44
  14. 29/99
  15. 7/20
  16. 23/33
  17. 37/40
  18. 67/55
  19. 47/72
  20. 6/5
  21. 13/28
  22. 5/6
  23. 97/110
  24. 13/12
  25. 7/12
  26. 1/3
  27. 23/21
  28. 1/3
  29. 4/9
  30. 1/3
  31. 45/44
  32. 5/24
  33. 21/22
  34. 46/35
  35. 7/12
  36. 1
  37. 1/21
  38. 17/20
  39. 1
  40. 7/10

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