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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 889 · 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. 1.7/12 − 1/7 =
  2. 2.7/10 − 1/4 =
  3. 3.1/8 + 2/5 =
  4. 4.4/5 + 3/4 =
  5. 5.6/12 + 4/11 =
  6. 6.4/6 − 1/5 =
  7. 7.3/5 − 2/4 =
  8. 8.1/2 − 1/3 =
  9. 9.5/6 + 1/2 =
  10. 10.4/5 − 1/7 =
  11. 11.2/3 − 1/5 =
  12. 12.3/7 + 7/10 =
  13. 13.7/8 + 8/11 =
  14. 14.6/10 − 4/9 =
  15. 15.2/8 + 3/6 =
  16. 16.1/8 + 1/5 =
  17. 17.8/9 + 2/6 =
  18. 18.3/5 − 2/4 =
  19. 19.2/7 + 3/4 =
  20. 20.3/7 − 2/9 =
  21. 21.5/6 − 1/3 =
  22. 22.7/9 − 3/4 =
  23. 23.1/2 − 1/4 =
  24. 24.5/9 + 7/10 =
  25. 25.5/6 + 2/3 =
  26. 26.9/12 + 3/4 =
  27. 27.10/11 − 1/10 =
  28. 28.3/4 − 3/5 =
  29. 29.11/12 − 1/3 =
  30. 30.1/2 − 2/9 =
  31. 31.8/12 − 4/9 =
  32. 32.2/6 + 1/2 =
  33. 33.11/12 − 5/11 =
  34. 34.1/2 + 4/12 =
  35. 35.1/3 − 1/7 =
  36. 36.2/9 + 2/3 =
  37. 37.7/11 − 1/2 =
  38. 38.5/6 − 2/9 =
  39. 39.1/5 + 1/2 =
  40. 40.2/4 + 2/7 =

Answer key

  1. 37/84
  2. 9/20
  3. 21/40
  4. 31/20
  5. 19/22
  6. 7/15
  7. 1/10
  8. 1/6
  9. 4/3
  10. 23/35
  11. 7/15
  12. 79/70
  13. 141/88
  14. 7/45
  15. 3/4
  16. 13/40
  17. 11/9
  18. 1/10
  19. 29/28
  20. 13/63
  21. 1/2
  22. 1/36
  23. 1/4
  24. 113/90
  25. 3/2
  26. 3/2
  27. 89/110
  28. 3/20
  29. 7/12
  30. 5/18
  31. 2/9
  32. 5/6
  33. 61/132
  34. 5/6
  35. 4/21
  36. 8/9
  37. 3/22
  38. 11/18
  39. 7/10
  40. 11/14

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