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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 151 · 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. 1.7/10 + 1/11 =
  2. 2.1/2 + 4/5 =
  3. 3.4/8 − 5/12 =
  4. 4.2/3 − 1/3 =
  5. 5.7/8 + 4/9 =
  6. 6.1/4 + 5/7 =
  7. 7.7/8 − 1/7 =
  8. 8.2/3 + 10/12 =
  9. 9.3/4 + 1/2 =
  10. 10.1/2 − 4/11 =
  11. 11.2/10 + 1/5 =
  12. 12.2/3 + 3/10 =
  13. 13.2/3 + 5/10 =
  14. 14.1/2 + 2/4 =
  15. 15.8/9 − 4/10 =
  16. 16.5/8 − 1/5 =
  17. 17.1/3 + 1/2 =
  18. 18.10/11 + 1/6 =
  19. 19.6/7 + 4/7 =
  20. 20.4/8 − 1/5 =
  21. 21.3/4 − 2/5 =
  22. 22.10/11 + 7/8 =
  23. 23.11/12 − 1/2 =
  24. 24.4/6 − 2/4 =
  25. 25.5/10 + 2/7 =
  26. 26.3/11 + 1/2 =
  27. 27.3/6 + 1/2 =
  28. 28.1/2 − 1/4 =
  29. 29.1/2 + 2/9 =
  30. 30.2/5 − 1/4 =
  31. 31.1/2 + 1/2 =
  32. 32.2/7 + 5/8 =
  33. 33.4/6 − 1/9 =
  34. 34.2/3 + 4/12 =
  35. 35.1/10 + 2/9 =
  36. 36.7/8 + 4/5 =
  37. 37.5/6 + 3/9 =
  38. 38.2/7 + 6/11 =
  39. 39.9/11 − 2/8 =
  40. 40.1/6 + 3/10 =

Answer key

  1. 87/110
  2. 13/10
  3. 1/12
  4. 1/3
  5. 95/72
  6. 27/28
  7. 41/56
  8. 3/2
  9. 5/4
  10. 3/22
  11. 2/5
  12. 29/30
  13. 7/6
  14. 1
  15. 22/45
  16. 17/40
  17. 5/6
  18. 71/66
  19. 10/7
  20. 3/10
  21. 7/20
  22. 157/88
  23. 5/12
  24. 1/6
  25. 11/14
  26. 17/22
  27. 1
  28. 1/4
  29. 13/18
  30. 3/20
  31. 1
  32. 51/56
  33. 5/9
  34. 1
  35. 29/90
  36. 67/40
  37. 7/6
  38. 64/77
  39. 25/44
  40. 7/15

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