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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 380 · 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 28 and 48 =
  2. 2.HCF of 51 and 36 =
  3. 3.HCF of 195 and 120 =
  4. 4.HCF of 120 and 32 =
  5. 5.HCF of 99 and 55 =
  6. 6.HCF of 45 and 162 =
  7. 7.HCF of 165 and 75 =
  8. 8.HCF of 340 and 360 =
  9. 9.HCF of 28 and 98 =
  10. 10.HCF of 18 and 120 =
  11. 11.HCF of 10 and 22 =
  12. 12.HCF of 242 and 176 =
  13. 13.HCF of 187 and 340 =
  14. 14.HCF of 12 and 68 =
  15. 15.HCF of 418 and 330 =
  16. 16.HCF of 24 and 16 =
  17. 17.HCF of 108 and 306 =
  18. 18.HCF of 46 and 253 =
  19. 19.HCF of 18 and 171 =
  20. 20.HCF of 57 and 190 =
  21. 21.HCF of 48 and 180 =
  22. 22.HCF of 90 and 234 =
  23. 23.HCF of 440 and 242 =
  24. 24.HCF of 54 and 102 =
  25. 25.HCF of 21 and 36 =
  26. 26.HCF of 16 and 12 =
  27. 27.HCF of 68 and 72 =
  28. 28.HCF of 187 and 51 =
  29. 29.HCF of 20 and 110 =
  30. 30.HCF of 15 and 65 =
  31. 31.HCF of 171 and 76 =
  32. 32.HCF of 330 and 352 =
  33. 33.HCF of 140 and 190 =
  34. 34.HCF of 33 and 45 =
  35. 35.HCF of 69 and 299 =
  36. 36.HCF of 85 and 119 =
  37. 37.HCF of 36 and 135 =
  38. 38.HCF of 128 and 144 =
  39. 39.HCF of 48 and 90 =
  40. 40.HCF of 65 and 50 =

Answer key

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

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