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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 354 · 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. 1.7/9 − 4/8 =
  2. 2.10/12 − 5/10 =
  3. 3.11/12 + 1/7 =
  4. 4.9/11 − 8/10 =
  5. 5.9/11 + 1/2 =
  6. 6.2/4 − 1/5 =
  7. 7.2/12 + 1/2 =
  8. 8.1/10 + 2/3 =
  9. 9.1/6 + 9/11 =
  10. 10.7/8 − 1/3 =
  11. 11.2/3 − 1/2 =
  12. 12.3/8 + 1/12 =
  13. 13.1/2 + 2/8 =
  14. 14.8/9 + 3/6 =
  15. 15.4/5 − 6/12 =
  16. 16.4/5 − 2/12 =
  17. 17.8/10 − 5/10 =
  18. 18.8/12 + 1/5 =
  19. 19.3/4 + 3/4 =
  20. 20.3/11 + 3/10 =
  21. 21.4/5 + 7/11 =
  22. 22.7/9 + 4/5 =
  23. 23.2/3 − 1/2 =
  24. 24.2/10 + 2/3 =
  25. 25.1/2 + 9/11 =
  26. 26.1/2 + 9/12 =
  27. 27.1/4 + 3/5 =
  28. 28.3/8 + 1/3 =
  29. 29.7/11 − 3/12 =
  30. 30.6/10 − 4/7 =
  31. 31.1/11 + 3/12 =
  32. 32.7/8 + 1/5 =
  33. 33.3/4 − 4/6 =
  34. 34.7/11 + 3/9 =
  35. 35.1/3 + 3/11 =
  36. 36.6/10 − 1/3 =
  37. 37.5/11 − 1/8 =
  38. 38.2/9 + 2/9 =
  39. 39.8/11 + 7/12 =
  40. 40.7/8 + 1/9 =

Answer key

  1. 5/18
  2. 1/3
  3. 89/84
  4. 1/55
  5. 29/22
  6. 3/10
  7. 2/3
  8. 23/30
  9. 65/66
  10. 13/24
  11. 1/6
  12. 11/24
  13. 3/4
  14. 25/18
  15. 3/10
  16. 19/30
  17. 3/10
  18. 13/15
  19. 3/2
  20. 63/110
  21. 79/55
  22. 71/45
  23. 1/6
  24. 13/15
  25. 29/22
  26. 5/4
  27. 17/20
  28. 17/24
  29. 17/44
  30. 1/35
  31. 15/44
  32. 43/40
  33. 1/12
  34. 32/33
  35. 20/33
  36. 4/15
  37. 29/88
  38. 4/9
  39. 173/132
  40. 71/72

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