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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 680 · 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 264 and 144 =
  2. 2.HCF of 119 and 51 =
  3. 3.HCF of 64 and 20 =
  4. 4.HCF of 99 and 77 =
  5. 5.HCF of 91 and 195 =
  6. 6.HCF of 78 and 48 =
  7. 7.HCF of 88 and 64 =
  8. 8.HCF of 60 and 168 =
  9. 9.HCF of 92 and 391 =
  10. 10.HCF of 100 and 120 =
  11. 11.HCF of 4 and 38 =
  12. 12.HCF of 154 and 280 =
  13. 13.HCF of 323 and 266 =
  14. 14.HCF of 42 and 189 =
  15. 15.HCF of 40 and 75 =
  16. 16.HCF of 119 and 272 =
  17. 17.HCF of 323 and 255 =
  18. 18.HCF of 126 and 198 =
  19. 19.HCF of 39 and 57 =
  20. 20.HCF of 39 and 91 =
  21. 21.HCF of 60 and 65 =
  22. 22.HCF of 34 and 38 =
  23. 23.HCF of 437 and 46 =
  24. 24.HCF of 105 and 378 =
  25. 25.HCF of 360 and 384 =
  26. 26.HCF of 57 and 361 =
  27. 27.HCF of 95 and 76 =
  28. 28.HCF of 28 and 64 =
  29. 29.HCF of 78 and 24 =
  30. 30.HCF of 154 and 28 =
  31. 31.HCF of 39 and 30 =
  32. 32.HCF of 8 and 52 =
  33. 33.HCF of 72 and 63 =
  34. 34.HCF of 252 and 342 =
  35. 35.HCF of 66 and 418 =
  36. 36.HCF of 192 and 120 =
  37. 37.HCF of 230 and 207 =
  38. 38.HCF of 247 and 361 =
  39. 39.HCF of 216 and 312 =
  40. 40.HCF of 105 and 147 =

Answer key

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

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