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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 980 · 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. 1.2/6 − 1/7 =
  2. 2.2/7 + 2/12 =
  3. 3.4/10 + 5/6 =
  4. 4.8/11 − 1/5 =
  5. 5.6/7 + 10/12 =
  6. 6.7/11 − 2/7 =
  7. 7.1/3 − 1/4 =
  8. 8.2/8 + 1/4 =
  9. 9.1/2 + 1/10 =
  10. 10.4/5 − 2/7 =
  11. 11.1/2 + 4/10 =
  12. 12.10/11 − 2/9 =
  13. 13.8/9 + 2/7 =
  14. 14.1/2 − 2/9 =
  15. 15.2/3 − 1/12 =
  16. 16.4/7 + 3/4 =
  17. 17.3/4 + 11/12 =
  18. 18.1/3 + 1/10 =
  19. 19.2/9 − 1/8 =
  20. 20.9/12 + 2/11 =
  21. 21.3/6 − 2/9 =
  22. 22.5/11 + 6/12 =
  23. 23.8/9 − 3/7 =
  24. 24.7/9 − 3/4 =
  25. 25.5/7 − 1/3 =
  26. 26.4/6 − 2/5 =
  27. 27.6/10 + 6/7 =
  28. 28.5/6 − 2/7 =
  29. 29.2/8 + 3/12 =
  30. 30.7/11 − 1/2 =
  31. 31.9/11 + 4/7 =
  32. 32.6/7 − 5/9 =
  33. 33.3/6 − 1/3 =
  34. 34.1/3 − 2/7 =
  35. 35.2/3 + 1/2 =
  36. 36.3/5 + 4/8 =
  37. 37.1/7 + 1/2 =
  38. 38.4/6 + 3/4 =
  39. 39.6/7 + 1/6 =
  40. 40.1/2 + 3/12 =

Answer key

  1. 4/21
  2. 19/42
  3. 37/30
  4. 29/55
  5. 71/42
  6. 27/77
  7. 1/12
  8. 1/2
  9. 3/5
  10. 18/35
  11. 9/10
  12. 68/99
  13. 74/63
  14. 5/18
  15. 7/12
  16. 37/28
  17. 5/3
  18. 13/30
  19. 7/72
  20. 41/44
  21. 5/18
  22. 21/22
  23. 29/63
  24. 1/36
  25. 8/21
  26. 4/15
  27. 51/35
  28. 23/42
  29. 1/2
  30. 3/22
  31. 107/77
  32. 19/63
  33. 1/6
  34. 1/21
  35. 7/6
  36. 11/10
  37. 9/14
  38. 17/12
  39. 43/42
  40. 3/4

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