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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 520 · 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 52 and 16 =
  2. 2.HCF of 4 and 14 =
  3. 3.HCF of 28 and 77 =
  4. 4.HCF of 252 and 399 =
  5. 5.HCF of 204 and 120 =
  6. 6.HCF of 133 and 14 =
  7. 7.HCF of 44 and 418 =
  8. 8.HCF of 220 and 240 =
  9. 9.HCF of 180 and 160 =
  10. 10.HCF of 342 and 360 =
  11. 11.HCF of 221 and 78 =
  12. 12.HCF of 70 and 60 =
  13. 13.HCF of 110 and 352 =
  14. 14.HCF of 126 and 196 =
  15. 15.HCF of 299 and 391 =
  16. 16.HCF of 32 and 60 =
  17. 17.HCF of 42 and 119 =
  18. 18.HCF of 12 and 27 =
  19. 19.HCF of 147 and 84 =
  20. 20.HCF of 228 and 120 =
  21. 21.HCF of 420 and 273 =
  22. 22.HCF of 126 and 133 =
  23. 23.HCF of 140 and 30 =
  24. 24.HCF of 264 and 72 =
  25. 25.HCF of 21 and 91 =
  26. 26.HCF of 253 and 92 =
  27. 27.HCF of 24 and 18 =
  28. 28.HCF of 108 and 168 =
  29. 29.HCF of 48 and 78 =
  30. 30.HCF of 312 and 432 =
  31. 31.HCF of 500 and 225 =
  32. 32.HCF of 128 and 40 =
  33. 33.HCF of 182 and 143 =
  34. 34.HCF of 22 and 55 =
  35. 35.HCF of 350 and 275 =
  36. 36.HCF of 242 and 352 =
  37. 37.HCF of 357 and 42 =
  38. 38.HCF of 152 and 40 =
  39. 39.HCF of 10 and 36 =
  40. 40.HCF of 88 and 56 =

Answer key

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

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