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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 530 · 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 54 and 102 =
  2. 2.HCF of 171 and 126 =
  3. 3.HCF of 220 and 418 =
  4. 4.HCF of 360 and 312 =
  5. 5.HCF of 315 and 168 =
  6. 6.HCF of 91 and 104 =
  7. 7.HCF of 120 and 152 =
  8. 8.HCF of 168 and 180 =
  9. 9.HCF of 28 and 8 =
  10. 10.HCF of 357 and 210 =
  11. 11.HCF of 90 and 12 =
  12. 12.HCF of 289 and 68 =
  13. 13.HCF of 289 and 170 =
  14. 14.HCF of 84 and 78 =
  15. 15.HCF of 207 and 184 =
  16. 16.HCF of 52 and 76 =
  17. 17.HCF of 12 and 22 =
  18. 18.HCF of 35 and 112 =
  19. 19.HCF of 22 and 121 =
  20. 20.HCF of 12 and 40 =
  21. 21.HCF of 120 and 336 =
  22. 22.HCF of 255 and 225 =
  23. 23.HCF of 72 and 20 =
  24. 24.HCF of 55 and 60 =
  25. 25.HCF of 209 and 33 =
  26. 26.HCF of 63 and 294 =
  27. 27.HCF of 200 and 380 =
  28. 28.HCF of 115 and 138 =
  29. 29.HCF of 60 and 70 =
  30. 30.HCF of 22 and 36 =
  31. 31.HCF of 272 and 192 =
  32. 32.HCF of 260 and 160 =
  33. 33.HCF of 80 and 25 =
  34. 34.HCF of 170 and 50 =
  35. 35.HCF of 154 and 99 =
  36. 36.HCF of 144 and 171 =
  37. 37.HCF of 90 and 40 =
  38. 38.HCF of 180 and 84 =
  39. 39.HCF of 100 and 190 =
  40. 40.HCF of 48 and 56 =

Answer key

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

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