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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 242 · 40 sums
TalentJR

The trick (Sankalana-Vyavakalanabhyam): Take the smaller number away from the bigger one, as many times as it goes. Now use the smaller number and what is left. Repeat until nothing is left: the last number before 0 is the HCF.

NameDateTime takenScore ___ / 40
  1. 1.HCF of 266 and 280 =
  2. 2.HCF of 255 and 60 =
  3. 3.HCF of 128 and 24 =
  4. 4.HCF of 46 and 437 =
  5. 5.HCF of 150 and 105 =
  6. 6.HCF of 46 and 437 =
  7. 7.HCF of 247 and 342 =
  8. 8.HCF of 225 and 175 =
  9. 9.HCF of 52 and 247 =
  10. 10.HCF of 4 and 26 =
  11. 11.HCF of 10 and 85 =
  12. 12.HCF of 9 and 12 =
  13. 13.HCF of 35 and 40 =
  14. 14.HCF of 475 and 400 =
  15. 15.HCF of 108 and 102 =
  16. 16.HCF of 115 and 253 =
  17. 17.HCF of 15 and 18 =
  18. 18.HCF of 156 and 65 =
  19. 19.HCF of 133 and 247 =
  20. 20.HCF of 54 and 33 =
  21. 21.HCF of 325 and 425 =
  22. 22.HCF of 14 and 12 =
  23. 23.HCF of 456 and 408 =
  24. 24.HCF of 230 and 161 =
  25. 25.HCF of 126 and 306 =
  26. 26.HCF of 105 and 112 =
  27. 27.HCF of 300 and 105 =
  28. 28.HCF of 120 and 156 =
  29. 29.HCF of 289 and 272 =
  30. 30.HCF of 102 and 12 =
  31. 31.HCF of 65 and 52 =
  32. 32.HCF of 105 and 45 =
  33. 33.HCF of 90 and 66 =
  34. 34.HCF of 56 and 21 =
  35. 35.HCF of 98 and 77 =
  36. 36.HCF of 26 and 39 =
  37. 37.HCF of 55 and 154 =
  38. 38.HCF of 168 and 70 =
  39. 39.HCF of 39 and 182 =
  40. 40.HCF of 340 and 200 =

Answer key

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

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