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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 428 · 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. 1.3/12 + 4/5 =
  2. 2.1/3 + 2/3 =
  3. 3.1/2 + 6/10 =
  4. 4.5/7 + 6/7 =
  5. 5.2/10 + 2/3 =
  6. 6.2/8 + 2/10 =
  7. 7.3/8 − 2/7 =
  8. 8.2/5 − 3/10 =
  9. 9.10/12 − 1/4 =
  10. 10.4/7 + 1/5 =
  11. 11.1/2 + 3/4 =
  12. 12.3/4 − 4/6 =
  13. 13.1/3 − 2/7 =
  14. 14.6/12 + 7/11 =
  15. 15.3/4 − 7/12 =
  16. 16.2/6 + 4/9 =
  17. 17.4/8 + 1/12 =
  18. 18.3/8 + 8/11 =
  19. 19.4/6 − 1/2 =
  20. 20.3/4 − 3/6 =
  21. 21.6/7 − 2/11 =
  22. 22.1/7 + 2/5 =
  23. 23.8/9 − 3/4 =
  24. 24.9/12 + 2/3 =
  25. 25.6/8 + 2/7 =
  26. 26.1/2 + 1/6 =
  27. 27.3/12 + 11/12 =
  28. 28.6/10 + 3/12 =
  29. 29.4/6 − 2/4 =
  30. 30.5/6 + 4/10 =
  31. 31.1/2 + 10/12 =
  32. 32.1/9 + 9/10 =
  33. 33.2/3 + 1/3 =
  34. 34.1/2 + 2/5 =
  35. 35.1/3 + 1/2 =
  36. 36.2/3 + 1/5 =
  37. 37.5/10 + 5/8 =
  38. 38.1/2 + 4/8 =
  39. 39.5/6 + 5/6 =
  40. 40.1/2 + 4/8 =

Answer key

  1. 21/20
  2. 1
  3. 11/10
  4. 11/7
  5. 13/15
  6. 9/20
  7. 5/56
  8. 1/10
  9. 7/12
  10. 27/35
  11. 5/4
  12. 1/12
  13. 1/21
  14. 25/22
  15. 1/6
  16. 7/9
  17. 7/12
  18. 97/88
  19. 1/6
  20. 1/4
  21. 52/77
  22. 19/35
  23. 5/36
  24. 17/12
  25. 29/28
  26. 2/3
  27. 7/6
  28. 17/20
  29. 1/6
  30. 37/30
  31. 4/3
  32. 91/90
  33. 1
  34. 9/10
  35. 5/6
  36. 13/15
  37. 9/8
  38. 1
  39. 5/3
  40. 1

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