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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 135 · 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 72 and 63 =
  2. 2.HCF of 36 and 102 =
  3. 3.HCF of 21 and 39 =
  4. 4.HCF of 114 and 36 =
  5. 5.HCF of 35 and 90 =
  6. 6.HCF of 75 and 105 =
  7. 7.HCF of 42 and 238 =
  8. 8.HCF of 60 and 27 =
  9. 9.HCF of 238 and 266 =
  10. 10.HCF of 154 and 66 =
  11. 11.HCF of 18 and 45 =
  12. 12.HCF of 121 and 165 =
  13. 13.HCF of 216 and 120 =
  14. 14.HCF of 39 and 260 =
  15. 15.HCF of 57 and 60 =
  16. 16.HCF of 384 and 72 =
  17. 17.HCF of 66 and 12 =
  18. 18.HCF of 400 and 260 =
  19. 19.HCF of 92 and 345 =
  20. 20.HCF of 299 and 322 =
  21. 21.HCF of 209 and 152 =
  22. 22.HCF of 54 and 24 =
  23. 23.HCF of 80 and 272 =
  24. 24.HCF of 112 and 49 =
  25. 25.HCF of 270 and 198 =
  26. 26.HCF of 63 and 45 =
  27. 27.HCF of 255 and 68 =
  28. 28.HCF of 20 and 26 =
  29. 29.HCF of 14 and 36 =
  30. 30.HCF of 255 and 119 =
  31. 31.HCF of 50 and 110 =
  32. 32.HCF of 275 and 150 =
  33. 33.HCF of 132 and 418 =
  34. 34.HCF of 56 and 152 =
  35. 35.HCF of 25 and 45 =
  36. 36.HCF of 119 and 42 =
  37. 37.HCF of 135 and 117 =
  38. 38.HCF of 10 and 8 =
  39. 39.HCF of 273 and 252 =
  40. 40.HCF of 224 and 176 =

Answer key

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

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