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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 775 · 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 170 and 187 =
  2. 2.HCF of 210 and 238 =
  3. 3.HCF of 126 and 28 =
  4. 4.HCF of 16 and 44 =
  5. 5.HCF of 33 and 54 =
  6. 6.HCF of 70 and 154 =
  7. 7.HCF of 425 and 50 =
  8. 8.HCF of 198 and 54 =
  9. 9.HCF of 304 and 192 =
  10. 10.HCF of 357 and 105 =
  11. 11.HCF of 272 and 187 =
  12. 12.HCF of 99 and 187 =
  13. 13.HCF of 77 and 33 =
  14. 14.HCF of 140 and 154 =
  15. 15.HCF of 60 and 96 =
  16. 16.HCF of 342 and 360 =
  17. 17.HCF of 35 and 40 =
  18. 18.HCF of 42 and 98 =
  19. 19.HCF of 24 and 68 =
  20. 20.HCF of 48 and 52 =
  21. 21.HCF of 204 and 240 =
  22. 22.HCF of 340 and 180 =
  23. 23.HCF of 98 and 252 =
  24. 24.HCF of 238 and 323 =
  25. 25.HCF of 144 and 171 =
  26. 26.HCF of 66 and 12 =
  27. 27.HCF of 30 and 12 =
  28. 28.HCF of 65 and 234 =
  29. 29.HCF of 360 and 162 =
  30. 30.HCF of 18 and 153 =
  31. 31.HCF of 110 and 286 =
  32. 32.HCF of 121 and 55 =
  33. 33.HCF of 35 and 91 =
  34. 34.HCF of 51 and 187 =
  35. 35.HCF of 286 and 66 =
  36. 36.HCF of 136 and 88 =
  37. 37.HCF of 152 and 96 =
  38. 38.HCF of 72 and 126 =
  39. 39.HCF of 27 and 48 =
  40. 40.HCF of 21 and 119 =

Answer key

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

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