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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 748 · 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. 1.2/3 + 3/6 =
  2. 2.3/4 − 5/9 =
  3. 3.2/4 + 1/3 =
  4. 4.1/2 + 1/6 =
  5. 5.7/8 − 3/6 =
  6. 6.5/11 + 7/9 =
  7. 7.2/12 − 1/11 =
  8. 8.2/7 + 7/11 =
  9. 9.1/2 + 1/2 =
  10. 10.7/10 + 2/7 =
  11. 11.5/6 − 2/3 =
  12. 12.1/2 + 4/7 =
  13. 13.4/10 − 1/4 =
  14. 14.1/4 + 5/11 =
  15. 15.2/4 + 1/4 =
  16. 16.2/3 − 1/3 =
  17. 17.6/8 − 2/7 =
  18. 18.6/7 − 2/5 =
  19. 19.4/6 + 2/3 =
  20. 20.6/7 − 2/10 =
  21. 21.1/2 + 3/9 =
  22. 22.7/9 − 1/3 =
  23. 23.1/3 + 1/2 =
  24. 24.9/12 − 1/2 =
  25. 25.2/8 + 7/9 =
  26. 26.5/8 + 4/6 =
  27. 27.2/9 − 1/5 =
  28. 28.1/2 + 2/7 =
  29. 29.3/12 + 2/8 =
  30. 30.1/2 + 1/4 =
  31. 31.5/8 + 1/3 =
  32. 32.3/4 − 2/6 =
  33. 33.6/7 + 3/4 =
  34. 34.2/5 + 2/6 =
  35. 35.1/5 + 11/12 =
  36. 36.2/9 + 3/10 =
  37. 37.3/5 − 4/7 =
  38. 38.7/12 − 1/2 =
  39. 39.3/5 − 5/10 =
  40. 40.4/5 + 1/4 =

Answer key

  1. 7/6
  2. 7/36
  3. 5/6
  4. 2/3
  5. 3/8
  6. 122/99
  7. 5/66
  8. 71/77
  9. 1
  10. 69/70
  11. 1/6
  12. 15/14
  13. 3/20
  14. 31/44
  15. 3/4
  16. 1/3
  17. 13/28
  18. 16/35
  19. 4/3
  20. 23/35
  21. 5/6
  22. 4/9
  23. 5/6
  24. 1/4
  25. 37/36
  26. 31/24
  27. 1/45
  28. 11/14
  29. 1/2
  30. 3/4
  31. 23/24
  32. 5/12
  33. 45/28
  34. 11/15
  35. 67/60
  36. 47/90
  37. 1/35
  38. 1/12
  39. 1/10
  40. 21/20

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