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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 649 · 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 275 and 225 =
  2. 2.HCF of 165 and 22 =
  3. 3.HCF of 120 and 102 =
  4. 4.HCF of 255 and 289 =
  5. 5.HCF of 45 and 240 =
  6. 6.HCF of 275 and 500 =
  7. 7.HCF of 90 and 130 =
  8. 8.HCF of 152 and 24 =
  9. 9.HCF of 154 and 238 =
  10. 10.HCF of 56 and 182 =
  11. 11.HCF of 255 and 105 =
  12. 12.HCF of 255 and 60 =
  13. 13.HCF of 357 and 378 =
  14. 14.HCF of 65 and 117 =
  15. 15.HCF of 36 and 102 =
  16. 16.HCF of 152 and 48 =
  17. 17.HCF of 90 and 165 =
  18. 18.HCF of 110 and 77 =
  19. 19.HCF of 70 and 25 =
  20. 20.HCF of 286 and 176 =
  21. 21.HCF of 60 and 66 =
  22. 22.HCF of 65 and 234 =
  23. 23.HCF of 120 and 72 =
  24. 24.HCF of 12 and 56 =
  25. 25.HCF of 228 and 240 =
  26. 26.HCF of 9 and 15 =
  27. 27.HCF of 54 and 12 =
  28. 28.HCF of 54 and 126 =
  29. 29.HCF of 460 and 437 =
  30. 30.HCF of 240 and 75 =
  31. 31.HCF of 238 and 126 =
  32. 32.HCF of 288 and 272 =
  33. 33.HCF of 105 and 357 =
  34. 34.HCF of 45 and 55 =
  35. 35.HCF of 170 and 323 =
  36. 36.HCF of 20 and 110 =
  37. 37.HCF of 85 and 153 =
  38. 38.HCF of 28 and 48 =
  39. 39.HCF of 16 and 68 =
  40. 40.HCF of 10 and 4 =

Answer key

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

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