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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 250 · 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 168 and 266 =
  2. 2.HCF of 90 and 255 =
  3. 3.HCF of 304 and 320 =
  4. 4.HCF of 171 and 95 =
  5. 5.HCF of 14 and 36 =
  6. 6.HCF of 85 and 51 =
  7. 7.HCF of 39 and 33 =
  8. 8.HCF of 275 and 425 =
  9. 9.HCF of 375 and 275 =
  10. 10.HCF of 168 and 70 =
  11. 11.HCF of 198 and 360 =
  12. 12.HCF of 48 and 42 =
  13. 13.HCF of 144 and 88 =
  14. 14.HCF of 20 and 170 =
  15. 15.HCF of 48 and 216 =
  16. 16.HCF of 60 and 21 =
  17. 17.HCF of 35 and 84 =
  18. 18.HCF of 54 and 288 =
  19. 19.HCF of 99 and 209 =
  20. 20.HCF of 78 and 24 =
  21. 21.HCF of 26 and 195 =
  22. 22.HCF of 105 and 168 =
  23. 23.HCF of 189 and 336 =
  24. 24.HCF of 9 and 42 =
  25. 25.HCF of 35 and 63 =
  26. 26.HCF of 69 and 161 =
  27. 27.HCF of 36 and 48 =
  28. 28.HCF of 80 and 180 =
  29. 29.HCF of 176 and 418 =
  30. 30.HCF of 380 and 300 =
  31. 31.HCF of 120 and 140 =
  32. 32.HCF of 152 and 120 =
  33. 33.HCF of 108 and 240 =
  34. 34.HCF of 114 and 24 =
  35. 35.HCF of 408 and 168 =
  36. 36.HCF of 70 and 77 =
  37. 37.HCF of 60 and 132 =
  38. 38.HCF of 77 and 220 =
  39. 39.HCF of 125 and 175 =
  40. 40.HCF of 176 and 418 =

Answer key

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

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