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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 220 · 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 − 2/10 =
  2. 2.2/3 + 2/7 =
  3. 3.1/2 − 2/5 =
  4. 4.3/4 − 1/4 =
  5. 5.4/7 + 3/10 =
  6. 6.7/8 − 3/7 =
  7. 7.10/12 + 1/3 =
  8. 8.2/3 − 5/12 =
  9. 9.6/7 − 4/5 =
  10. 10.4/8 − 2/8 =
  11. 11.2/3 + 9/10 =
  12. 12.1/2 + 3/12 =
  13. 13.5/7 − 2/10 =
  14. 14.5/6 + 8/9 =
  15. 15.3/5 − 1/2 =
  16. 16.1/2 + 1/3 =
  17. 17.3/4 + 6/12 =
  18. 18.4/5 − 7/9 =
  19. 19.2/3 − 1/3 =
  20. 20.5/6 + 3/9 =
  21. 21.2/7 + 1/2 =
  22. 22.6/7 − 1/2 =
  23. 23.1/2 + 1/3 =
  24. 24.4/6 − 1/3 =
  25. 25.1/7 + 4/8 =
  26. 26.1/2 + 6/7 =
  27. 27.1/10 + 3/8 =
  28. 28.2/7 + 1/7 =
  29. 29.2/3 − 3/7 =
  30. 30.9/12 + 1/2 =
  31. 31.2/4 − 1/11 =
  32. 32.2/7 + 1/5 =
  33. 33.3/4 − 6/9 =
  34. 34.3/4 + 3/4 =
  35. 35.7/11 + 1/10 =
  36. 36.1/3 + 7/8 =
  37. 37.2/11 + 6/7 =
  38. 38.2/4 + 2/4 =
  39. 39.1/4 + 6/7 =
  40. 40.5/8 − 2/10 =

Answer key

  1. 7/15
  2. 20/21
  3. 1/10
  4. 1/2
  5. 61/70
  6. 25/56
  7. 7/6
  8. 1/4
  9. 2/35
  10. 1/4
  11. 47/30
  12. 3/4
  13. 18/35
  14. 31/18
  15. 1/10
  16. 5/6
  17. 5/4
  18. 1/45
  19. 1/3
  20. 7/6
  21. 11/14
  22. 5/14
  23. 5/6
  24. 1/3
  25. 9/14
  26. 19/14
  27. 19/40
  28. 3/7
  29. 5/21
  30. 5/4
  31. 9/22
  32. 17/35
  33. 1/12
  34. 3/2
  35. 81/110
  36. 29/24
  37. 80/77
  38. 1
  39. 31/28
  40. 17/40

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