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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 699 · 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 − 2/7 =
  2. 2.5/7 + 3/5 =
  3. 3.7/9 + 2/8 =
  4. 4.1/9 + 3/5 =
  5. 5.4/7 + 4/5 =
  6. 6.8/12 − 3/5 =
  7. 7.3/4 + 1/2 =
  8. 8.1/10 + 7/8 =
  9. 9.1/5 + 3/4 =
  10. 10.2/3 + 2/5 =
  11. 11.3/4 − 2/6 =
  12. 12.1/12 + 1/4 =
  13. 13.7/9 + 5/7 =
  14. 14.1/2 + 2/4 =
  15. 15.2/10 − 1/8 =
  16. 16.4/6 + 1/2 =
  17. 17.1/2 + 2/4 =
  18. 18.8/9 − 1/2 =
  19. 19.8/12 − 1/9 =
  20. 20.4/11 + 6/7 =
  21. 21.1/6 − 1/9 =
  22. 22.3/7 − 1/3 =
  23. 23.10/11 + 3/11 =
  24. 24.1/6 + 1/6 =
  25. 25.5/7 + 2/4 =
  26. 26.3/4 + 1/2 =
  27. 27.4/9 + 6/7 =
  28. 28.2/9 + 1/8 =
  29. 29.9/10 + 10/11 =
  30. 30.2/3 − 1/7 =
  31. 31.2/11 + 5/12 =
  32. 32.4/7 − 2/9 =
  33. 33.1/7 + 10/11 =
  34. 34.6/12 − 3/7 =
  35. 35.1/11 + 4/11 =
  36. 36.1/2 + 1/2 =
  37. 37.8/12 + 4/10 =
  38. 38.4/11 + 2/3 =
  39. 39.4/12 + 1/3 =
  40. 40.4/7 + 6/10 =

Answer key

  1. 8/21
  2. 46/35
  3. 37/36
  4. 32/45
  5. 48/35
  6. 1/15
  7. 5/4
  8. 39/40
  9. 19/20
  10. 16/15
  11. 5/12
  12. 1/3
  13. 94/63
  14. 1
  15. 3/40
  16. 7/6
  17. 1
  18. 7/18
  19. 5/9
  20. 94/77
  21. 1/18
  22. 2/21
  23. 13/11
  24. 1/3
  25. 17/14
  26. 5/4
  27. 82/63
  28. 25/72
  29. 199/110
  30. 11/21
  31. 79/132
  32. 22/63
  33. 81/77
  34. 1/14
  35. 5/11
  36. 1
  37. 16/15
  38. 34/33
  39. 2/3
  40. 41/35

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