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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 23 · 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 80 and 136 =
  2. 2.HCF of 330 and 352 =
  3. 3.HCF of 280 and 180 =
  4. 4.HCF of 475 and 350 =
  5. 5.HCF of 51 and 36 =
  6. 6.HCF of 56 and 68 =
  7. 7.HCF of 72 and 336 =
  8. 8.HCF of 60 and 40 =
  9. 9.HCF of 33 and 187 =
  10. 10.HCF of 171 and 126 =
  11. 11.HCF of 21 and 77 =
  12. 12.HCF of 49 and 126 =
  13. 13.HCF of 209 and 114 =
  14. 14.HCF of 45 and 105 =
  15. 15.HCF of 198 and 418 =
  16. 16.HCF of 70 and 196 =
  17. 17.HCF of 256 and 240 =
  18. 18.HCF of 440 and 374 =
  19. 19.HCF of 90 and 24 =
  20. 20.HCF of 312 and 120 =
  21. 21.HCF of 75 and 210 =
  22. 22.HCF of 75 and 50 =
  23. 23.HCF of 69 and 368 =
  24. 24.HCF of 42 and 24 =
  25. 25.HCF of 119 and 28 =
  26. 26.HCF of 57 and 21 =
  27. 27.HCF of 100 and 125 =
  28. 28.HCF of 63 and 49 =
  29. 29.HCF of 288 and 168 =
  30. 30.HCF of 207 and 92 =
  31. 31.HCF of 450 and 275 =
  32. 32.HCF of 253 and 414 =
  33. 33.HCF of 117 and 108 =
  34. 34.HCF of 9 and 33 =
  35. 35.HCF of 143 and 65 =
  36. 36.HCF of 54 and 180 =
  37. 37.HCF of 300 and 175 =
  38. 38.HCF of 99 and 88 =
  39. 39.HCF of 78 and 42 =
  40. 40.HCF of 66 and 220 =

Answer key

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

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