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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 465 · 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 84 and 102 =
  2. 2.HCF of 66 and 187 =
  3. 3.HCF of 72 and 20 =
  4. 4.HCF of 30 and 8 =
  5. 5.HCF of 156 and 24 =
  6. 6.HCF of 90 and 140 =
  7. 7.HCF of 40 and 12 =
  8. 8.HCF of 286 and 308 =
  9. 9.HCF of 255 and 75 =
  10. 10.HCF of 80 and 76 =
  11. 11.HCF of 154 and 242 =
  12. 12.HCF of 304 and 48 =
  13. 13.HCF of 72 and 88 =
  14. 14.HCF of 57 and 33 =
  15. 15.HCF of 40 and 56 =
  16. 16.HCF of 176 and 165 =
  17. 17.HCF of 456 and 240 =
  18. 18.HCF of 224 and 48 =
  19. 19.HCF of 250 and 225 =
  20. 20.HCF of 88 and 77 =
  21. 21.HCF of 130 and 60 =
  22. 22.HCF of 20 and 6 =
  23. 23.HCF of 112 and 126 =
  24. 24.HCF of 48 and 152 =
  25. 25.HCF of 24 and 14 =
  26. 26.HCF of 50 and 35 =
  27. 27.HCF of 18 and 117 =
  28. 28.HCF of 238 and 126 =
  29. 29.HCF of 36 and 102 =
  30. 30.HCF of 49 and 42 =
  31. 31.HCF of 68 and 60 =
  32. 32.HCF of 242 and 308 =
  33. 33.HCF of 276 and 115 =
  34. 34.HCF of 55 and 75 =
  35. 35.HCF of 270 and 234 =
  36. 36.HCF of 24 and 30 =
  37. 37.HCF of 200 and 180 =
  38. 38.HCF of 418 and 132 =
  39. 39.HCF of 154 and 28 =
  40. 40.HCF of 24 and 28 =

Answer key

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

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