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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 868 · 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 126 and 288 =
  2. 2.HCF of 102 and 96 =
  3. 3.HCF of 44 and 418 =
  4. 4.HCF of 304 and 32 =
  5. 5.HCF of 119 and 14 =
  6. 6.HCF of 28 and 210 =
  7. 7.HCF of 323 and 340 =
  8. 8.HCF of 154 and 396 =
  9. 9.HCF of 289 and 34 =
  10. 10.HCF of 28 and 63 =
  11. 11.HCF of 361 and 57 =
  12. 12.HCF of 90 and 130 =
  13. 13.HCF of 266 and 196 =
  14. 14.HCF of 16 and 104 =
  15. 15.HCF of 80 and 15 =
  16. 16.HCF of 20 and 64 =
  17. 17.HCF of 39 and 27 =
  18. 18.HCF of 32 and 34 =
  19. 19.HCF of 325 and 375 =
  20. 20.HCF of 228 and 144 =
  21. 21.HCF of 224 and 48 =
  22. 22.HCF of 56 and 136 =
  23. 23.HCF of 100 and 280 =
  24. 24.HCF of 33 and 42 =
  25. 25.HCF of 136 and 32 =
  26. 26.HCF of 75 and 40 =
  27. 27.HCF of 66 and 30 =
  28. 28.HCF of 110 and 150 =
  29. 29.HCF of 63 and 105 =
  30. 30.HCF of 35 and 85 =
  31. 31.HCF of 221 and 204 =
  32. 32.HCF of 207 and 92 =
  33. 33.HCF of 72 and 336 =
  34. 34.HCF of 289 and 221 =
  35. 35.HCF of 437 and 115 =
  36. 36.HCF of 40 and 112 =
  37. 37.HCF of 325 and 125 =
  38. 38.HCF of 117 and 26 =
  39. 39.HCF of 255 and 120 =
  40. 40.HCF of 255 and 225 =

Answer key

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

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