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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 30 · 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. 1.3/5 + 3/8 =
  2. 2.1/2 + 3/12 =
  3. 3.2/4 + 7/9 =
  4. 4.1/2 + 1/2 =
  5. 5.3/4 + 6/7 =
  6. 6.5/8 − 2/4 =
  7. 7.4/5 + 2/8 =
  8. 8.2/10 + 4/11 =
  9. 9.6/8 + 6/10 =
  10. 10.1/5 + 4/6 =
  11. 11.4/5 + 1/2 =
  12. 12.6/7 + 2/3 =
  13. 13.9/12 + 5/9 =
  14. 14.2/5 + 6/9 =
  15. 15.2/3 + 5/8 =
  16. 16.6/10 − 1/5 =
  17. 17.3/4 − 8/12 =
  18. 18.1/2 + 1/2 =
  19. 19.3/6 + 1/6 =
  20. 20.1/3 + 7/10 =
  21. 21.3/12 + 8/9 =
  22. 22.10/11 + 1/6 =
  23. 23.7/12 + 2/3 =
  24. 24.7/8 + 4/12 =
  25. 25.2/4 + 4/10 =
  26. 26.1/5 − 1/6 =
  27. 27.4/7 − 1/10 =
  28. 28.2/3 − 3/9 =
  29. 29.6/8 − 1/12 =
  30. 30.4/5 + 9/10 =
  31. 31.1/2 + 1/11 =
  32. 32.5/6 + 1/3 =
  33. 33.1/4 + 5/6 =
  34. 34.3/5 + 2/10 =
  35. 35.1/7 − 1/8 =
  36. 36.2/5 + 2/3 =
  37. 37.3/6 + 1/10 =
  38. 38.6/12 + 4/8 =
  39. 39.2/10 + 3/12 =
  40. 40.5/8 + 2/4 =

Answer key

  1. 39/40
  2. 3/4
  3. 23/18
  4. 1
  5. 45/28
  6. 1/8
  7. 21/20
  8. 31/55
  9. 27/20
  10. 13/15
  11. 13/10
  12. 32/21
  13. 47/36
  14. 16/15
  15. 31/24
  16. 2/5
  17. 1/12
  18. 1
  19. 2/3
  20. 31/30
  21. 41/36
  22. 71/66
  23. 5/4
  24. 29/24
  25. 9/10
  26. 1/30
  27. 33/70
  28. 1/3
  29. 2/3
  30. 17/10
  31. 13/22
  32. 7/6
  33. 13/12
  34. 4/5
  35. 1/56
  36. 16/15
  37. 3/5
  38. 1
  39. 9/20
  40. 9/8

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