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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 777 · 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. 1.2/3 + 3/7 =
  2. 2.4/10 + 6/9 =
  3. 3.9/10 + 2/3 =
  4. 4.11/12 + 9/11 =
  5. 5.3/5 + 8/10 =
  6. 6.2/3 − 1/3 =
  7. 7.2/5 + 1/4 =
  8. 8.3/5 + 7/8 =
  9. 9.1/2 − 1/8 =
  10. 10.6/10 − 7/12 =
  11. 11.4/5 − 2/6 =
  12. 12.4/5 + 2/5 =
  13. 13.6/9 + 1/10 =
  14. 14.5/9 − 1/2 =
  15. 15.2/7 + 5/9 =
  16. 16.6/7 + 2/3 =
  17. 17.1/2 − 2/5 =
  18. 18.8/12 + 5/9 =
  19. 19.8/11 − 1/2 =
  20. 20.1/4 + 2/8 =
  21. 21.1/4 + 2/10 =
  22. 22.5/11 − 1/3 =
  23. 23.4/12 + 7/10 =
  24. 24.3/12 − 1/7 =
  25. 25.2/3 − 3/5 =
  26. 26.6/10 + 3/5 =
  27. 27.2/8 + 1/4 =
  28. 28.7/11 − 1/5 =
  29. 29.1/2 − 1/11 =
  30. 30.3/4 + 1/6 =
  31. 31.4/7 + 1/2 =
  32. 32.1/3 + 1/2 =
  33. 33.8/12 − 1/5 =
  34. 34.2/7 + 1/2 =
  35. 35.8/11 + 1/4 =
  36. 36.2/8 + 4/10 =
  37. 37.1/2 − 3/9 =
  38. 38.2/7 + 6/7 =
  39. 39.6/12 + 1/6 =
  40. 40.3/7 + 8/11 =

Answer key

  1. 23/21
  2. 16/15
  3. 47/30
  4. 229/132
  5. 7/5
  6. 1/3
  7. 13/20
  8. 59/40
  9. 3/8
  10. 1/60
  11. 7/15
  12. 6/5
  13. 23/30
  14. 1/18
  15. 53/63
  16. 32/21
  17. 1/10
  18. 11/9
  19. 5/22
  20. 1/2
  21. 9/20
  22. 4/33
  23. 31/30
  24. 3/28
  25. 1/15
  26. 6/5
  27. 1/2
  28. 24/55
  29. 9/22
  30. 11/12
  31. 15/14
  32. 5/6
  33. 7/15
  34. 11/14
  35. 43/44
  36. 13/20
  37. 1/6
  38. 8/7
  39. 2/3
  40. 89/77

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