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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 842 · 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. 1.5/8 + 3/11 =
  2. 2.3/10 − 1/5 =
  3. 3.8/9 + 2/3 =
  4. 4.1/3 + 1/5 =
  5. 5.6/9 + 5/7 =
  6. 6.1/3 + 1/2 =
  7. 7.2/3 − 1/7 =
  8. 8.3/12 + 3/4 =
  9. 9.3/7 + 5/11 =
  10. 10.3/7 − 1/8 =
  11. 11.3/5 − 3/7 =
  12. 12.1/2 − 1/3 =
  13. 13.2/4 + 1/2 =
  14. 14.7/11 − 1/2 =
  15. 15.3/4 − 6/10 =
  16. 16.6/10 − 1/12 =
  17. 17.3/10 − 1/7 =
  18. 18.3/8 − 3/9 =
  19. 19.1/2 − 1/4 =
  20. 20.3/4 − 3/11 =
  21. 21.4/5 + 1/3 =
  22. 22.6/7 + 2/7 =
  23. 23.1/2 − 4/9 =
  24. 24.1/5 + 3/4 =
  25. 25.1/2 − 5/12 =
  26. 26.2/3 − 1/4 =
  27. 27.1/3 − 2/12 =
  28. 28.5/6 + 3/5 =
  29. 29.6/11 + 2/6 =
  30. 30.4/7 + 1/4 =
  31. 31.2/3 + 1/2 =
  32. 32.3/7 + 8/9 =
  33. 33.6/8 − 3/11 =
  34. 34.3/8 + 1/9 =
  35. 35.6/8 + 1/5 =
  36. 36.1/12 + 2/10 =
  37. 37.1/3 − 2/11 =
  38. 38.8/9 + 7/10 =
  39. 39.2/3 + 2/5 =
  40. 40.10/11 + 2/7 =

Answer key

  1. 79/88
  2. 1/10
  3. 14/9
  4. 8/15
  5. 29/21
  6. 5/6
  7. 11/21
  8. 1
  9. 68/77
  10. 17/56
  11. 6/35
  12. 1/6
  13. 1
  14. 3/22
  15. 3/20
  16. 31/60
  17. 11/70
  18. 1/24
  19. 1/4
  20. 21/44
  21. 17/15
  22. 8/7
  23. 1/18
  24. 19/20
  25. 1/12
  26. 5/12
  27. 1/6
  28. 43/30
  29. 29/33
  30. 23/28
  31. 7/6
  32. 83/63
  33. 21/44
  34. 35/72
  35. 19/20
  36. 17/60
  37. 5/33
  38. 143/90
  39. 16/15
  40. 92/77

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