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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 491 · 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 26 and 40 =
  2. 2.HCF of 88 and 143 =
  3. 3.HCF of 153 and 85 =
  4. 4.HCF of 60 and 54 =
  5. 5.HCF of 380 and 171 =
  6. 6.HCF of 289 and 272 =
  7. 7.HCF of 420 and 189 =
  8. 8.HCF of 198 and 162 =
  9. 9.HCF of 48 and 156 =
  10. 10.HCF of 230 and 437 =
  11. 11.HCF of 150 and 425 =
  12. 12.HCF of 8 and 18 =
  13. 13.HCF of 30 and 22 =
  14. 14.HCF of 238 and 280 =
  15. 15.HCF of 432 and 120 =
  16. 16.HCF of 24 and 76 =
  17. 17.HCF of 128 and 176 =
  18. 18.HCF of 147 and 63 =
  19. 19.HCF of 75 and 350 =
  20. 20.HCF of 126 and 77 =
  21. 21.HCF of 156 and 216 =
  22. 22.HCF of 105 and 119 =
  23. 23.HCF of 102 and 42 =
  24. 24.HCF of 32 and 104 =
  25. 25.HCF of 28 and 64 =
  26. 26.HCF of 28 and 16 =
  27. 27.HCF of 425 and 175 =
  28. 28.HCF of 48 and 408 =
  29. 29.HCF of 14 and 38 =
  30. 30.HCF of 78 and 24 =
  31. 31.HCF of 306 and 108 =
  32. 32.HCF of 144 and 270 =
  33. 33.HCF of 272 and 256 =
  34. 34.HCF of 33 and 12 =
  35. 35.HCF of 207 and 322 =
  36. 36.HCF of 34 and 8 =
  37. 37.HCF of 77 and 22 =
  38. 38.HCF of 153 and 18 =
  39. 39.HCF of 51 and 85 =
  40. 40.HCF of 154 and 110 =

Answer key

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

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