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Adding and Subtracting Fractions Worksheet

Vedic maths trick 33: Adding and subtracting fractions · Set 758 · 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. 1.1/4 + 1/5 =
  2. 2.10/12 − 4/7 =
  3. 3.2/4 − 1/4 =
  4. 4.1/8 + 3/5 =
  5. 5.3/4 + 4/11 =
  6. 6.9/12 + 2/6 =
  7. 7.1/5 + 7/8 =
  8. 8.2/3 + 1/2 =
  9. 9.7/11 − 1/2 =
  10. 10.6/8 − 3/7 =
  11. 11.5/6 − 2/3 =
  12. 12.1/8 + 7/9 =
  13. 13.2/3 + 1/3 =
  14. 14.1/2 + 2/4 =
  15. 15.1/2 + 3/8 =
  16. 16.6/9 + 3/4 =
  17. 17.1/6 + 1/4 =
  18. 18.6/9 − 1/3 =
  19. 19.2/4 − 3/7 =
  20. 20.7/8 + 7/10 =
  21. 21.6/11 − 1/2 =
  22. 22.9/11 + 1/3 =
  23. 23.1/2 − 3/8 =
  24. 24.1/2 + 3/11 =
  25. 25.5/6 − 2/3 =
  26. 26.2/4 + 1/2 =
  27. 27.2/3 + 6/7 =
  28. 28.3/4 − 1/4 =
  29. 29.7/12 + 1/8 =
  30. 30.4/5 + 1/2 =
  31. 31.1/4 + 3/7 =
  32. 32.1/2 + 5/10 =
  33. 33.2/5 − 1/11 =
  34. 34.2/3 − 1/4 =
  35. 35.2/3 + 1/3 =
  36. 36.3/4 + 3/7 =
  37. 37.2/3 + 5/7 =
  38. 38.6/8 + 1/4 =
  39. 39.5/7 + 8/9 =
  40. 40.5/10 + 4/7 =

Answer key

  1. 9/20
  2. 11/42
  3. 1/4
  4. 29/40
  5. 49/44
  6. 13/12
  7. 43/40
  8. 7/6
  9. 3/22
  10. 9/28
  11. 1/6
  12. 65/72
  13. 1
  14. 1
  15. 7/8
  16. 17/12
  17. 5/12
  18. 1/3
  19. 1/14
  20. 63/40
  21. 1/22
  22. 38/33
  23. 1/8
  24. 17/22
  25. 1/6
  26. 1
  27. 32/21
  28. 1/2
  29. 17/24
  30. 13/10
  31. 19/28
  32. 1
  33. 17/55
  34. 5/12
  35. 1
  36. 33/28
  37. 29/21
  38. 1
  39. 101/63
  40. 15/14

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