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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 39 · 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. 1.6/7 + 3/12 =
  2. 2.1/11 + 1/3 =
  3. 3.4/8 + 1/4 =
  4. 4.5/12 + 3/7 =
  5. 5.4/5 − 7/10 =
  6. 6.6/7 − 3/4 =
  7. 7.7/10 + 1/2 =
  8. 8.3/7 − 1/5 =
  9. 9.9/10 − 6/11 =
  10. 10.2/3 + 2/5 =
  11. 11.1/2 − 2/8 =
  12. 12.9/10 + 1/2 =
  13. 13.1/2 + 4/7 =
  14. 14.1/3 + 1/2 =
  15. 15.7/9 + 6/7 =
  16. 16.5/8 − 1/2 =
  17. 17.1/2 − 3/12 =
  18. 18.5/8 − 5/10 =
  19. 19.3/5 + 2/4 =
  20. 20.9/11 − 1/3 =
  21. 21.6/7 − 3/6 =
  22. 22.9/12 + 1/2 =
  23. 23.1/9 + 7/11 =
  24. 24.5/7 − 1/3 =
  25. 25.6/10 + 5/6 =
  26. 26.8/11 − 2/6 =
  27. 27.1/6 + 3/4 =
  28. 28.1/3 − 1/12 =
  29. 29.2/4 − 1/3 =
  30. 30.4/9 + 5/11 =
  31. 31.7/10 + 3/4 =
  32. 32.6/9 + 7/12 =
  33. 33.4/8 + 1/2 =
  34. 34.1/2 + 2/4 =
  35. 35.7/11 − 1/3 =
  36. 36.2/6 + 1/5 =
  37. 37.4/9 + 1/2 =
  38. 38.1/5 + 1/4 =
  39. 39.1/2 + 1/2 =
  40. 40.3/5 + 2/8 =

Answer key

  1. 31/28
  2. 14/33
  3. 3/4
  4. 71/84
  5. 1/10
  6. 3/28
  7. 6/5
  8. 8/35
  9. 39/110
  10. 16/15
  11. 1/4
  12. 7/5
  13. 15/14
  14. 5/6
  15. 103/63
  16. 1/8
  17. 1/4
  18. 1/8
  19. 11/10
  20. 16/33
  21. 5/14
  22. 5/4
  23. 74/99
  24. 8/21
  25. 43/30
  26. 13/33
  27. 11/12
  28. 1/4
  29. 1/6
  30. 89/99
  31. 29/20
  32. 5/4
  33. 1
  34. 1
  35. 10/33
  36. 8/15
  37. 17/18
  38. 9/20
  39. 1
  40. 17/20

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