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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 401 · 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. 1.1/2 + 4/5 =
  2. 2.3/5 + 1/7 =
  3. 3.1/2 − 1/3 =
  4. 4.3/8 + 2/3 =
  5. 5.3/12 + 3/12 =
  6. 6.7/9 + 1/11 =
  7. 7.3/11 + 3/7 =
  8. 8.1/2 + 3/11 =
  9. 9.6/7 + 3/10 =
  10. 10.2/3 − 2/4 =
  11. 11.9/12 − 7/12 =
  12. 12.11/12 − 6/12 =
  13. 13.3/6 + 9/11 =
  14. 14.4/8 − 5/11 =
  15. 15.3/5 − 3/12 =
  16. 16.1/6 + 1/2 =
  17. 17.5/6 − 3/12 =
  18. 18.1/4 + 7/9 =
  19. 19.1/8 + 1/3 =
  20. 20.3/4 − 5/7 =
  21. 21.2/3 + 2/5 =
  22. 22.3/9 − 1/5 =
  23. 23.1/6 + 9/11 =
  24. 24.1/3 + 5/8 =
  25. 25.1/4 + 2/4 =
  26. 26.7/8 − 3/11 =
  27. 27.2/6 + 1/9 =
  28. 28.4/6 + 2/5 =
  29. 29.6/7 − 3/7 =
  30. 30.3/9 + 8/10 =
  31. 31.5/6 + 1/2 =
  32. 32.2/4 + 1/2 =
  33. 33.2/11 + 6/12 =
  34. 34.9/10 + 2/6 =
  35. 35.4/10 + 1/9 =
  36. 36.1/3 − 2/7 =
  37. 37.8/11 − 5/7 =
  38. 38.3/6 + 9/12 =
  39. 39.1/2 + 3/4 =
  40. 40.1/7 + 1/2 =

Answer key

  1. 13/10
  2. 26/35
  3. 1/6
  4. 25/24
  5. 1/2
  6. 86/99
  7. 54/77
  8. 17/22
  9. 81/70
  10. 1/6
  11. 1/6
  12. 5/12
  13. 29/22
  14. 1/22
  15. 7/20
  16. 2/3
  17. 7/12
  18. 37/36
  19. 11/24
  20. 1/28
  21. 16/15
  22. 2/15
  23. 65/66
  24. 23/24
  25. 3/4
  26. 53/88
  27. 4/9
  28. 16/15
  29. 3/7
  30. 17/15
  31. 4/3
  32. 1
  33. 15/22
  34. 37/30
  35. 23/45
  36. 1/21
  37. 1/77
  38. 5/4
  39. 5/4
  40. 9/14

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