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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 782 · 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 220 and 80 =
  2. 2.HCF of 57 and 18 =
  3. 3.HCF of 255 and 238 =
  4. 4.HCF of 154 and 66 =
  5. 5.HCF of 210 and 238 =
  6. 6.HCF of 55 and 77 =
  7. 7.HCF of 63 and 70 =
  8. 8.HCF of 88 and 24 =
  9. 9.HCF of 210 and 195 =
  10. 10.HCF of 95 and 15 =
  11. 11.HCF of 12 and 76 =
  12. 12.HCF of 374 and 264 =
  13. 13.HCF of 105 and 14 =
  14. 14.HCF of 55 and 143 =
  15. 15.HCF of 104 and 247 =
  16. 16.HCF of 300 and 425 =
  17. 17.HCF of 80 and 28 =
  18. 18.HCF of 136 and 40 =
  19. 19.HCF of 40 and 75 =
  20. 20.HCF of 168 and 264 =
  21. 21.HCF of 35 and 90 =
  22. 22.HCF of 75 and 325 =
  23. 23.HCF of 45 and 99 =
  24. 24.HCF of 77 and 44 =
  25. 25.HCF of 216 and 240 =
  26. 26.HCF of 18 and 51 =
  27. 27.HCF of 126 and 140 =
  28. 28.HCF of 180 and 171 =
  29. 29.HCF of 152 and 80 =
  30. 30.HCF of 140 and 42 =
  31. 31.HCF of 76 and 44 =
  32. 32.HCF of 99 and 209 =
  33. 33.HCF of 195 and 285 =
  34. 34.HCF of 143 and 220 =
  35. 35.HCF of 285 and 247 =
  36. 36.HCF of 34 and 119 =
  37. 37.HCF of 240 and 256 =
  38. 38.HCF of 27 and 33 =
  39. 39.HCF of 306 and 234 =
  40. 40.HCF of 143 and 187 =

Answer key

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

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