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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 404 · 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 39 and 26 =
  2. 2.HCF of 280 and 126 =
  3. 3.HCF of 221 and 234 =
  4. 4.HCF of 132 and 108 =
  5. 5.HCF of 64 and 68 =
  6. 6.HCF of 60 and 32 =
  7. 7.HCF of 275 and 50 =
  8. 8.HCF of 247 and 114 =
  9. 9.HCF of 115 and 138 =
  10. 10.HCF of 192 and 180 =
  11. 11.HCF of 207 and 368 =
  12. 12.HCF of 24 and 21 =
  13. 13.HCF of 39 and 54 =
  14. 14.HCF of 88 and 120 =
  15. 15.HCF of 288 and 408 =
  16. 16.HCF of 253 and 276 =
  17. 17.HCF of 84 and 60 =
  18. 18.HCF of 160 and 220 =
  19. 19.HCF of 216 and 60 =
  20. 20.HCF of 437 and 92 =
  21. 21.HCF of 60 and 52 =
  22. 22.HCF of 224 and 98 =
  23. 23.HCF of 85 and 95 =
  24. 24.HCF of 98 and 112 =
  25. 25.HCF of 115 and 391 =
  26. 26.HCF of 190 and 120 =
  27. 27.HCF of 95 and 40 =
  28. 28.HCF of 374 and 286 =
  29. 29.HCF of 66 and 209 =
  30. 30.HCF of 175 and 250 =
  31. 31.HCF of 156 and 221 =
  32. 32.HCF of 26 and 12 =
  33. 33.HCF of 102 and 12 =
  34. 34.HCF of 144 and 56 =
  35. 35.HCF of 456 and 216 =
  36. 36.HCF of 15 and 12 =
  37. 37.HCF of 84 and 147 =
  38. 38.HCF of 126 and 324 =
  39. 39.HCF of 322 and 437 =
  40. 40.HCF of 20 and 50 =

Answer key

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

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