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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 678 · 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. 1.4/12 + 1/2 =
  2. 2.5/7 − 4/9 =
  3. 3.2/3 − 4/7 =
  4. 4.6/9 + 1/12 =
  5. 5.7/9 + 1/2 =
  6. 6.4/9 + 4/7 =
  7. 7.5/7 + 1/2 =
  8. 8.1/2 − 2/6 =
  9. 9.5/8 − 1/2 =
  10. 10.3/8 − 1/3 =
  11. 11.1/5 + 1/4 =
  12. 12.9/12 − 1/7 =
  13. 13.5/7 + 6/7 =
  14. 14.1/3 + 6/7 =
  15. 15.3/5 + 2/7 =
  16. 16.1/11 + 6/9 =
  17. 17.2/9 + 2/4 =
  18. 18.2/5 + 1/3 =
  19. 19.5/8 − 4/9 =
  20. 20.4/6 + 8/10 =
  21. 21.1/2 + 3/9 =
  22. 22.4/5 + 1/12 =
  23. 23.4/12 + 1/5 =
  24. 24.3/4 + 6/8 =
  25. 25.2/7 + 1/2 =
  26. 26.5/11 − 3/7 =
  27. 27.3/7 + 1/2 =
  28. 28.6/12 − 1/4 =
  29. 29.3/7 + 3/6 =
  30. 30.3/10 + 2/4 =
  31. 31.1/5 + 3/6 =
  32. 32.5/10 + 3/4 =
  33. 33.3/5 − 1/5 =
  34. 34.9/10 + 3/6 =
  35. 35.1/8 + 1/4 =
  36. 36.3/5 + 3/11 =
  37. 37.8/11 + 1/10 =
  38. 38.11/12 − 5/8 =
  39. 39.4/5 + 4/8 =
  40. 40.2/3 + 1/2 =

Answer key

  1. 5/6
  2. 17/63
  3. 2/21
  4. 3/4
  5. 23/18
  6. 64/63
  7. 17/14
  8. 1/6
  9. 1/8
  10. 1/24
  11. 9/20
  12. 17/28
  13. 11/7
  14. 25/21
  15. 31/35
  16. 25/33
  17. 13/18
  18. 11/15
  19. 13/72
  20. 22/15
  21. 5/6
  22. 53/60
  23. 8/15
  24. 3/2
  25. 11/14
  26. 2/77
  27. 13/14
  28. 1/4
  29. 13/14
  30. 4/5
  31. 7/10
  32. 5/4
  33. 2/5
  34. 7/5
  35. 3/8
  36. 48/55
  37. 91/110
  38. 7/24
  39. 13/10
  40. 7/6

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