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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 554 · 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 360 =
  2. 2.HCF of 264 and 242 =
  3. 3.HCF of 154 and 209 =
  4. 4.HCF of 57 and 380 =
  5. 5.HCF of 69 and 115 =
  6. 6.HCF of 121 and 99 =
  7. 7.HCF of 15 and 6 =
  8. 8.HCF of 100 and 160 =
  9. 9.HCF of 98 and 84 =
  10. 10.HCF of 133 and 209 =
  11. 11.HCF of 15 and 80 =
  12. 12.HCF of 18 and 14 =
  13. 13.HCF of 91 and 56 =
  14. 14.HCF of 72 and 64 =
  15. 15.HCF of 21 and 77 =
  16. 16.HCF of 77 and 133 =
  17. 17.HCF of 69 and 322 =
  18. 18.HCF of 48 and 28 =
  19. 19.HCF of 100 and 120 =
  20. 20.HCF of 66 and 84 =
  21. 21.HCF of 57 and 380 =
  22. 22.HCF of 165 and 120 =
  23. 23.HCF of 133 and 84 =
  24. 24.HCF of 289 and 136 =
  25. 25.HCF of 400 and 260 =
  26. 26.HCF of 315 and 168 =
  27. 27.HCF of 52 and 65 =
  28. 28.HCF of 378 and 231 =
  29. 29.HCF of 46 and 69 =
  30. 30.HCF of 160 and 56 =
  31. 31.HCF of 175 and 50 =
  32. 32.HCF of 240 and 176 =
  33. 33.HCF of 391 and 184 =
  34. 34.HCF of 75 and 70 =
  35. 35.HCF of 136 and 72 =
  36. 36.HCF of 22 and 36 =
  37. 37.HCF of 324 and 126 =
  38. 38.HCF of 6 and 20 =
  39. 39.HCF of 10 and 65 =
  40. 40.HCF of 30 and 84 =

Answer key

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

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