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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 353 · 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 64 and 76 =
  2. 2.HCF of 437 and 368 =
  3. 3.HCF of 240 and 168 =
  4. 4.HCF of 34 and 221 =
  5. 5.HCF of 81 and 126 =
  6. 6.HCF of 171 and 72 =
  7. 7.HCF of 384 and 312 =
  8. 8.HCF of 77 and 35 =
  9. 9.HCF of 77 and 33 =
  10. 10.HCF of 56 and 152 =
  11. 11.HCF of 40 and 48 =
  12. 12.HCF of 160 and 90 =
  13. 13.HCF of 180 and 380 =
  14. 14.HCF of 114 and 24 =
  15. 15.HCF of 18 and 78 =
  16. 16.HCF of 160 and 136 =
  17. 17.HCF of 153 and 54 =
  18. 18.HCF of 200 and 70 =
  19. 19.HCF of 66 and 78 =
  20. 20.HCF of 54 and 60 =
  21. 21.HCF of 306 and 324 =
  22. 22.HCF of 119 and 306 =
  23. 23.HCF of 6 and 10 =
  24. 24.HCF of 49 and 77 =
  25. 25.HCF of 45 and 85 =
  26. 26.HCF of 65 and 221 =
  27. 27.HCF of 56 and 60 =
  28. 28.HCF of 200 and 340 =
  29. 29.HCF of 30 and 39 =
  30. 30.HCF of 85 and 80 =
  31. 31.HCF of 108 and 60 =
  32. 32.HCF of 391 and 115 =
  33. 33.HCF of 64 and 56 =
  34. 34.HCF of 40 and 76 =
  35. 35.HCF of 120 and 32 =
  36. 36.HCF of 162 and 198 =
  37. 37.HCF of 144 and 60 =
  38. 38.HCF of 14 and 4 =
  39. 39.HCF of 147 and 105 =
  40. 40.HCF of 340 and 400 =

Answer key

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

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