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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 56 · 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 170 and 160 =
  2. 2.HCF of 304 and 171 =
  3. 3.HCF of 45 and 153 =
  4. 4.HCF of 42 and 35 =
  5. 5.HCF of 361 and 247 =
  6. 6.HCF of 10 and 34 =
  7. 7.HCF of 84 and 204 =
  8. 8.HCF of 165 and 270 =
  9. 9.HCF of 125 and 325 =
  10. 10.HCF of 144 and 27 =
  11. 11.HCF of 108 and 78 =
  12. 12.HCF of 52 and 24 =
  13. 13.HCF of 330 and 176 =
  14. 14.HCF of 33 and 48 =
  15. 15.HCF of 20 and 65 =
  16. 16.HCF of 28 and 133 =
  17. 17.HCF of 323 and 152 =
  18. 18.HCF of 180 and 153 =
  19. 19.HCF of 204 and 144 =
  20. 20.HCF of 272 and 176 =
  21. 21.HCF of 120 and 56 =
  22. 22.HCF of 10 and 18 =
  23. 23.HCF of 112 and 35 =
  24. 24.HCF of 128 and 120 =
  25. 25.HCF of 60 and 35 =
  26. 26.HCF of 391 and 207 =
  27. 27.HCF of 30 and 65 =
  28. 28.HCF of 120 and 340 =
  29. 29.HCF of 286 and 132 =
  30. 30.HCF of 242 and 176 =
  31. 31.HCF of 84 and 216 =
  32. 32.HCF of 255 and 240 =
  33. 33.HCF of 176 and 112 =
  34. 34.HCF of 250 and 325 =
  35. 35.HCF of 91 and 63 =
  36. 36.HCF of 120 and 220 =
  37. 37.HCF of 20 and 6 =
  38. 38.HCF of 32 and 120 =
  39. 39.HCF of 117 and 18 =
  40. 40.HCF of 27 and 144 =

Answer key

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

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