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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 128 · 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 66 and 187 =
  2. 2.HCF of 24 and 22 =
  3. 3.HCF of 306 and 289 =
  4. 4.HCF of 216 and 192 =
  5. 5.HCF of 306 and 72 =
  6. 6.HCF of 192 and 156 =
  7. 7.HCF of 48 and 36 =
  8. 8.HCF of 266 and 56 =
  9. 9.HCF of 60 and 280 =
  10. 10.HCF of 322 and 391 =
  11. 11.HCF of 207 and 46 =
  12. 12.HCF of 33 and 209 =
  13. 13.HCF of 228 and 156 =
  14. 14.HCF of 96 and 114 =
  15. 15.HCF of 255 and 289 =
  16. 16.HCF of 18 and 40 =
  17. 17.HCF of 77 and 105 =
  18. 18.HCF of 336 and 264 =
  19. 19.HCF of 98 and 42 =
  20. 20.HCF of 85 and 51 =
  21. 21.HCF of 88 and 143 =
  22. 22.HCF of 96 and 84 =
  23. 23.HCF of 25 and 95 =
  24. 24.HCF of 27 and 12 =
  25. 25.HCF of 135 and 126 =
  26. 26.HCF of 440 and 242 =
  27. 27.HCF of 64 and 20 =
  28. 28.HCF of 180 and 190 =
  29. 29.HCF of 54 and 234 =
  30. 30.HCF of 39 and 60 =
  31. 31.HCF of 150 and 475 =
  32. 32.HCF of 440 and 198 =
  33. 33.HCF of 234 and 324 =
  34. 34.HCF of 112 and 256 =
  35. 35.HCF of 88 and 165 =
  36. 36.HCF of 85 and 323 =
  37. 37.HCF of 480 and 456 =
  38. 38.HCF of 91 and 133 =
  39. 39.HCF of 323 and 38 =
  40. 40.HCF of 304 and 240 =

Answer key

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

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