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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 852 · 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. 1.8/9 − 6/7 =
  2. 2.5/8 + 1/8 =
  3. 3.1/10 + 3/9 =
  4. 4.3/4 + 1/2 =
  5. 5.5/10 + 3/7 =
  6. 6.6/12 + 1/4 =
  7. 7.5/11 − 3/8 =
  8. 8.5/7 + 4/9 =
  9. 9.1/11 + 6/7 =
  10. 10.1/3 + 6/11 =
  11. 11.1/3 + 2/5 =
  12. 12.1/8 + 1/2 =
  13. 13.10/12 − 1/3 =
  14. 14.4/11 + 1/12 =
  15. 15.5/11 + 7/10 =
  16. 16.1/2 + 4/6 =
  17. 17.3/4 − 1/6 =
  18. 18.7/8 − 5/11 =
  19. 19.8/12 + 2/7 =
  20. 20.4/5 + 1/8 =
  21. 21.4/6 − 1/2 =
  22. 22.5/7 + 5/11 =
  23. 23.8/12 + 3/11 =
  24. 24.3/4 − 1/6 =
  25. 25.2/4 + 1/3 =
  26. 26.1/6 + 6/7 =
  27. 27.5/6 + 9/11 =
  28. 28.6/12 + 3/7 =
  29. 29.6/7 − 3/7 =
  30. 30.5/8 + 9/10 =
  31. 31.1/5 + 4/6 =
  32. 32.3/11 + 2/5 =
  33. 33.4/10 + 9/11 =
  34. 34.11/12 − 3/7 =
  35. 35.6/10 − 2/5 =
  36. 36.7/10 + 3/9 =
  37. 37.4/8 + 2/5 =
  38. 38.3/12 + 3/12 =
  39. 39.3/8 + 5/6 =
  40. 40.3/4 + 1/2 =

Answer key

  1. 2/63
  2. 3/4
  3. 13/30
  4. 5/4
  5. 13/14
  6. 3/4
  7. 7/88
  8. 73/63
  9. 73/77
  10. 29/33
  11. 11/15
  12. 5/8
  13. 1/2
  14. 59/132
  15. 127/110
  16. 7/6
  17. 7/12
  18. 37/88
  19. 20/21
  20. 37/40
  21. 1/6
  22. 90/77
  23. 31/33
  24. 7/12
  25. 5/6
  26. 43/42
  27. 109/66
  28. 13/14
  29. 3/7
  30. 61/40
  31. 13/15
  32. 37/55
  33. 67/55
  34. 41/84
  35. 1/5
  36. 31/30
  37. 9/10
  38. 1/2
  39. 29/24
  40. 5/4

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