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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 327 · 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 288 and 198 =
  2. 2.HCF of 36 and 45 =
  3. 3.HCF of 96 and 66 =
  4. 4.HCF of 60 and 190 =
  5. 5.HCF of 20 and 170 =
  6. 6.HCF of 125 and 150 =
  7. 7.HCF of 128 and 40 =
  8. 8.HCF of 357 and 231 =
  9. 9.HCF of 304 and 288 =
  10. 10.HCF of 104 and 247 =
  11. 11.HCF of 220 and 140 =
  12. 12.HCF of 119 and 85 =
  13. 13.HCF of 126 and 238 =
  14. 14.HCF of 120 and 165 =
  15. 15.HCF of 24 and 114 =
  16. 16.HCF of 44 and 68 =
  17. 17.HCF of 48 and 320 =
  18. 18.HCF of 264 and 360 =
  19. 19.HCF of 289 and 272 =
  20. 20.HCF of 90 and 70 =
  21. 21.HCF of 80 and 288 =
  22. 22.HCF of 55 and 209 =
  23. 23.HCF of 28 and 35 =
  24. 24.HCF of 56 and 136 =
  25. 25.HCF of 57 and 48 =
  26. 26.HCF of 456 and 192 =
  27. 27.HCF of 28 and 34 =
  28. 28.HCF of 81 and 117 =
  29. 29.HCF of 56 and 154 =
  30. 30.HCF of 85 and 65 =
  31. 31.HCF of 35 and 40 =
  32. 32.HCF of 38 and 32 =
  33. 33.HCF of 20 and 36 =
  34. 34.HCF of 357 and 420 =
  35. 35.HCF of 357 and 126 =
  36. 36.HCF of 221 and 169 =
  37. 37.HCF of 325 and 375 =
  38. 38.HCF of 33 and 39 =
  39. 39.HCF of 340 and 119 =
  40. 40.HCF of 357 and 273 =

Answer key

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

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