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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 208 · 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. 1.3/8 − 1/4 =
  2. 2.2/5 + 6/8 =
  3. 3.3/8 − 1/5 =
  4. 4.1/3 + 1/7 =
  5. 5.2/4 + 8/10 =
  6. 6.9/12 − 2/8 =
  7. 7.4/11 + 4/12 =
  8. 8.2/5 + 2/5 =
  9. 9.1/4 + 6/11 =
  10. 10.3/4 + 7/11 =
  11. 11.1/6 + 9/11 =
  12. 12.1/3 + 1/3 =
  13. 13.1/2 − 1/6 =
  14. 14.4/9 + 4/6 =
  15. 15.1/2 + 7/8 =
  16. 16.2/11 − 1/7 =
  17. 17.9/10 − 1/4 =
  18. 18.2/3 + 2/4 =
  19. 19.1/2 + 3/4 =
  20. 20.2/7 + 1/2 =
  21. 21.1/2 + 1/7 =
  22. 22.2/4 + 2/5 =
  23. 23.1/4 + 3/4 =
  24. 24.1/2 − 1/3 =
  25. 25.9/12 + 3/9 =
  26. 26.3/8 − 2/7 =
  27. 27.2/6 + 6/8 =
  28. 28.1/3 − 2/12 =
  29. 29.3/10 + 3/8 =
  30. 30.1/2 + 1/4 =
  31. 31.9/11 − 1/2 =
  32. 32.5/7 − 2/11 =
  33. 33.5/8 + 5/6 =
  34. 34.2/4 + 6/10 =
  35. 35.9/10 + 1/8 =
  36. 36.1/5 + 10/11 =
  37. 37.5/8 − 2/11 =
  38. 38.8/10 − 1/2 =
  39. 39.1/3 + 1/2 =
  40. 40.8/9 − 1/10 =

Answer key

  1. 1/8
  2. 23/20
  3. 7/40
  4. 10/21
  5. 13/10
  6. 1/2
  7. 23/33
  8. 4/5
  9. 35/44
  10. 61/44
  11. 65/66
  12. 2/3
  13. 1/3
  14. 10/9
  15. 11/8
  16. 3/77
  17. 13/20
  18. 7/6
  19. 5/4
  20. 11/14
  21. 9/14
  22. 9/10
  23. 1
  24. 1/6
  25. 13/12
  26. 5/56
  27. 13/12
  28. 1/6
  29. 27/40
  30. 3/4
  31. 7/22
  32. 41/77
  33. 35/24
  34. 11/10
  35. 41/40
  36. 61/55
  37. 39/88
  38. 3/10
  39. 5/6
  40. 71/90

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