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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 108 · 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. 1.4/7 − 2/4 =
  2. 2.2/5 − 3/11 =
  3. 3.3/5 + 5/7 =
  4. 4.5/8 + 1/6 =
  5. 5.1/3 + 7/9 =
  6. 6.2/3 + 1/2 =
  7. 7.9/11 + 1/7 =
  8. 8.2/3 − 1/2 =
  9. 9.6/7 + 4/11 =
  10. 10.11/12 − 1/3 =
  11. 11.2/10 + 6/8 =
  12. 12.4/12 − 1/8 =
  13. 13.3/4 + 1/7 =
  14. 14.5/10 + 1/7 =
  15. 15.1/2 + 1/2 =
  16. 16.2/4 + 2/3 =
  17. 17.4/9 + 1/2 =
  18. 18.1/2 + 2/4 =
  19. 19.3/8 + 1/5 =
  20. 20.4/7 + 7/8 =
  21. 21.7/11 − 2/4 =
  22. 22.6/7 − 3/5 =
  23. 23.1/3 + 2/3 =
  24. 24.4/5 + 6/9 =
  25. 25.3/4 − 1/5 =
  26. 26.9/10 + 4/7 =
  27. 27.6/9 − 1/2 =
  28. 28.2/6 + 2/4 =
  29. 29.2/3 + 8/12 =
  30. 30.1/6 − 1/12 =
  31. 31.2/6 − 1/6 =
  32. 32.6/12 + 3/9 =
  33. 33.2/4 − 2/5 =
  34. 34.5/10 − 3/11 =
  35. 35.3/4 + 2/7 =
  36. 36.7/12 + 1/2 =
  37. 37.8/10 + 2/7 =
  38. 38.1/2 − 1/4 =
  39. 39.3/9 + 4/12 =
  40. 40.3/5 + 3/7 =

Answer key

  1. 1/14
  2. 7/55
  3. 46/35
  4. 19/24
  5. 10/9
  6. 7/6
  7. 74/77
  8. 1/6
  9. 94/77
  10. 7/12
  11. 19/20
  12. 5/24
  13. 25/28
  14. 9/14
  15. 1
  16. 7/6
  17. 17/18
  18. 1
  19. 23/40
  20. 81/56
  21. 3/22
  22. 9/35
  23. 1
  24. 22/15
  25. 11/20
  26. 103/70
  27. 1/6
  28. 5/6
  29. 4/3
  30. 1/12
  31. 1/6
  32. 5/6
  33. 1/10
  34. 5/22
  35. 29/28
  36. 13/12
  37. 38/35
  38. 1/4
  39. 2/3
  40. 36/35

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