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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 195 · 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 20 and 26 =
  2. 2.HCF of 312 and 384 =
  3. 3.HCF of 64 and 12 =
  4. 4.HCF of 44 and 242 =
  5. 5.HCF of 88 and 120 =
  6. 6.HCF of 60 and 76 =
  7. 7.HCF of 140 and 110 =
  8. 8.HCF of 198 and 342 =
  9. 9.HCF of 36 and 171 =
  10. 10.HCF of 357 and 273 =
  11. 11.HCF of 391 and 299 =
  12. 12.HCF of 110 and 70 =
  13. 13.HCF of 49 and 105 =
  14. 14.HCF of 25 and 20 =
  15. 15.HCF of 304 and 96 =
  16. 16.HCF of 144 and 198 =
  17. 17.HCF of 28 and 35 =
  18. 18.HCF of 460 and 391 =
  19. 19.HCF of 80 and 130 =
  20. 20.HCF of 60 and 204 =
  21. 21.HCF of 189 and 231 =
  22. 22.HCF of 437 and 184 =
  23. 23.HCF of 154 and 198 =
  24. 24.HCF of 247 and 57 =
  25. 25.HCF of 480 and 264 =
  26. 26.HCF of 154 and 198 =
  27. 27.HCF of 192 and 180 =
  28. 28.HCF of 42 and 72 =
  29. 29.HCF of 56 and 70 =
  30. 30.HCF of 81 and 18 =
  31. 31.HCF of 132 and 60 =
  32. 32.HCF of 80 and 144 =
  33. 33.HCF of 57 and 24 =
  34. 34.HCF of 154 and 242 =
  35. 35.HCF of 72 and 99 =
  36. 36.HCF of 92 and 253 =
  37. 37.HCF of 66 and 114 =
  38. 38.HCF of 322 and 299 =
  39. 39.HCF of 68 and 153 =
  40. 40.HCF of 400 and 325 =

Answer key

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

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