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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 15 · 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. 1.1/7 + 1/5 =
  2. 2.1/2 + 1/3 =
  3. 3.4/10 + 3/8 =
  4. 4.2/7 + 2/9 =
  5. 5.5/7 + 1/6 =
  6. 6.1/2 + 4/9 =
  7. 7.1/6 + 5/6 =
  8. 8.1/4 + 1/3 =
  9. 9.7/11 − 1/3 =
  10. 10.6/12 + 5/11 =
  11. 11.4/7 + 7/10 =
  12. 12.3/5 − 1/9 =
  13. 13.1/4 + 1/2 =
  14. 14.1/4 + 1/3 =
  15. 15.1/2 − 1/3 =
  16. 16.9/10 − 1/9 =
  17. 17.1/5 + 2/4 =
  18. 18.2/4 + 1/3 =
  19. 19.6/9 − 3/12 =
  20. 20.6/7 − 2/10 =
  21. 21.6/8 − 3/12 =
  22. 22.7/9 − 2/12 =
  23. 23.9/10 + 1/2 =
  24. 24.5/12 + 2/5 =
  25. 25.10/11 + 2/3 =
  26. 26.3/5 + 7/11 =
  27. 27.10/11 + 4/12 =
  28. 28.6/10 − 1/2 =
  29. 29.4/6 − 1/2 =
  30. 30.1/7 + 1/7 =
  31. 31.1/2 + 7/12 =
  32. 32.9/11 − 3/6 =
  33. 33.9/11 − 5/10 =
  34. 34.5/7 − 1/2 =
  35. 35.3/5 + 7/9 =
  36. 36.2/9 + 1/2 =
  37. 37.7/12 + 4/6 =
  38. 38.4/5 + 1/5 =
  39. 39.3/6 + 1/7 =
  40. 40.5/9 − 5/10 =

Answer key

  1. 12/35
  2. 5/6
  3. 31/40
  4. 32/63
  5. 37/42
  6. 17/18
  7. 1
  8. 7/12
  9. 10/33
  10. 21/22
  11. 89/70
  12. 22/45
  13. 3/4
  14. 7/12
  15. 1/6
  16. 71/90
  17. 7/10
  18. 5/6
  19. 5/12
  20. 23/35
  21. 1/2
  22. 11/18
  23. 7/5
  24. 49/60
  25. 52/33
  26. 68/55
  27. 41/33
  28. 1/10
  29. 1/6
  30. 2/7
  31. 13/12
  32. 7/22
  33. 7/22
  34. 3/14
  35. 62/45
  36. 13/18
  37. 5/4
  38. 1
  39. 9/14
  40. 1/18

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