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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 804 · 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. 1.7/10 − 7/11 =
  2. 2.8/10 − 1/2 =
  3. 3.1/7 + 6/12 =
  4. 4.2/3 − 2/5 =
  5. 5.7/9 − 4/11 =
  6. 6.1/2 + 2/9 =
  7. 7.3/4 − 1/2 =
  8. 8.2/12 + 8/12 =
  9. 9.11/12 − 1/3 =
  10. 10.2/6 + 4/5 =
  11. 11.2/8 + 3/12 =
  12. 12.1/2 + 3/6 =
  13. 13.7/8 + 1/10 =
  14. 14.2/3 − 1/2 =
  15. 15.1/4 + 9/11 =
  16. 16.3/4 − 1/2 =
  17. 17.1/2 − 4/9 =
  18. 18.9/10 − 2/6 =
  19. 19.9/10 − 10/12 =
  20. 20.7/12 − 2/4 =
  21. 21.1/4 + 8/9 =
  22. 22.4/6 − 4/7 =
  23. 23.4/7 + 1/5 =
  24. 24.3/5 + 3/8 =
  25. 25.4/8 + 1/2 =
  26. 26.1/6 + 9/11 =
  27. 27.9/11 + 1/2 =
  28. 28.4/11 + 4/10 =
  29. 29.1/6 − 1/10 =
  30. 30.3/5 + 2/5 =
  31. 31.2/3 − 2/10 =
  32. 32.3/4 − 3/11 =
  33. 33.9/10 − 4/5 =
  34. 34.1/8 + 1/3 =
  35. 35.2/3 + 3/4 =
  36. 36.1/12 + 2/7 =
  37. 37.2/7 + 2/10 =
  38. 38.2/7 + 1/5 =
  39. 39.1/2 − 1/10 =
  40. 40.1/4 + 3/8 =

Answer key

  1. 7/110
  2. 3/10
  3. 9/14
  4. 4/15
  5. 41/99
  6. 13/18
  7. 1/4
  8. 5/6
  9. 7/12
  10. 17/15
  11. 1/2
  12. 1
  13. 39/40
  14. 1/6
  15. 47/44
  16. 1/4
  17. 1/18
  18. 17/30
  19. 1/15
  20. 1/12
  21. 41/36
  22. 2/21
  23. 27/35
  24. 39/40
  25. 1
  26. 65/66
  27. 29/22
  28. 42/55
  29. 1/15
  30. 1
  31. 7/15
  32. 21/44
  33. 1/10
  34. 11/24
  35. 17/12
  36. 31/84
  37. 17/35
  38. 17/35
  39. 2/5
  40. 5/8

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