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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 553 · 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 198 and 180 =
  2. 2.HCF of 391 and 368 =
  3. 3.HCF of 119 and 204 =
  4. 4.HCF of 66 and 102 =
  5. 5.HCF of 480 and 456 =
  6. 6.HCF of 10 and 85 =
  7. 7.HCF of 184 and 437 =
  8. 8.HCF of 120 and 105 =
  9. 9.HCF of 198 and 418 =
  10. 10.HCF of 25 and 10 =
  11. 11.HCF of 39 and 6 =
  12. 12.HCF of 475 and 275 =
  13. 13.HCF of 437 and 138 =
  14. 14.HCF of 286 and 374 =
  15. 15.HCF of 90 and 165 =
  16. 16.HCF of 120 and 264 =
  17. 17.HCF of 16 and 20 =
  18. 18.HCF of 150 and 125 =
  19. 19.HCF of 12 and 56 =
  20. 20.HCF of 312 and 360 =
  21. 21.HCF of 8 and 20 =
  22. 22.HCF of 15 and 55 =
  23. 23.HCF of 95 and 50 =
  24. 24.HCF of 6 and 34 =
  25. 25.HCF of 96 and 102 =
  26. 26.HCF of 154 and 210 =
  27. 27.HCF of 247 and 380 =
  28. 28.HCF of 95 and 25 =
  29. 29.HCF of 273 and 63 =
  30. 30.HCF of 325 and 275 =
  31. 31.HCF of 60 and 8 =
  32. 32.HCF of 156 and 24 =
  33. 33.HCF of 330 and 286 =
  34. 34.HCF of 12 and 42 =
  35. 35.HCF of 306 and 162 =
  36. 36.HCF of 54 and 234 =
  37. 37.HCF of 396 and 374 =
  38. 38.HCF of 126 and 54 =
  39. 39.HCF of 247 and 195 =
  40. 40.HCF of 39 and 42 =

Answer key

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

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