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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 975 · 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. 1.7/8 − 1/7 =
  2. 2.2/8 − 1/7 =
  3. 3.9/11 + 4/7 =
  4. 4.10/12 − 2/4 =
  5. 5.5/8 + 3/6 =
  6. 6.1/2 + 2/3 =
  7. 7.5/6 + 1/3 =
  8. 8.8/10 + 1/2 =
  9. 9.7/11 + 1/7 =
  10. 10.3/5 + 2/5 =
  11. 11.1/10 + 7/9 =
  12. 12.1/2 + 1/7 =
  13. 13.1/2 + 3/5 =
  14. 14.3/9 + 1/7 =
  15. 15.2/3 − 1/10 =
  16. 16.8/9 − 1/6 =
  17. 17.3/12 − 1/5 =
  18. 18.2/4 + 5/9 =
  19. 19.1/5 + 1/2 =
  20. 20.3/5 + 10/11 =
  21. 21.8/11 − 2/4 =
  22. 22.1/2 − 1/3 =
  23. 23.6/10 − 1/6 =
  24. 24.2/5 + 2/4 =
  25. 25.2/5 + 1/2 =
  26. 26.2/5 − 2/7 =
  27. 27.10/11 + 6/7 =
  28. 28.2/4 + 1/10 =
  29. 29.3/12 + 8/9 =
  30. 30.7/12 + 1/6 =
  31. 31.1/2 + 1/2 =
  32. 32.9/11 + 1/2 =
  33. 33.6/7 − 3/12 =
  34. 34.2/8 − 2/12 =
  35. 35.1/4 + 1/8 =
  36. 36.3/6 + 1/2 =
  37. 37.5/10 − 3/7 =
  38. 38.3/10 + 6/7 =
  39. 39.3/4 − 4/11 =
  40. 40.11/12 − 5/7 =

Answer key

  1. 41/56
  2. 3/28
  3. 107/77
  4. 1/3
  5. 9/8
  6. 7/6
  7. 7/6
  8. 13/10
  9. 60/77
  10. 1
  11. 79/90
  12. 9/14
  13. 11/10
  14. 10/21
  15. 17/30
  16. 13/18
  17. 1/20
  18. 19/18
  19. 7/10
  20. 83/55
  21. 5/22
  22. 1/6
  23. 13/30
  24. 9/10
  25. 9/10
  26. 4/35
  27. 136/77
  28. 3/5
  29. 41/36
  30. 3/4
  31. 1
  32. 29/22
  33. 17/28
  34. 1/12
  35. 3/8
  36. 1
  37. 1/14
  38. 81/70
  39. 17/44
  40. 17/84

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