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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 927 · 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 320 and 272 =
  2. 2.HCF of 78 and 66 =
  3. 3.HCF of 95 and 247 =
  4. 4.HCF of 140 and 42 =
  5. 5.HCF of 380 and 180 =
  6. 6.HCF of 190 and 133 =
  7. 7.HCF of 391 and 368 =
  8. 8.HCF of 4 and 6 =
  9. 9.HCF of 8 and 36 =
  10. 10.HCF of 312 and 264 =
  11. 11.HCF of 170 and 120 =
  12. 12.HCF of 52 and 195 =
  13. 13.HCF of 418 and 440 =
  14. 14.HCF of 288 and 126 =
  15. 15.HCF of 100 and 275 =
  16. 16.HCF of 90 and 95 =
  17. 17.HCF of 36 and 21 =
  18. 18.HCF of 72 and 68 =
  19. 19.HCF of 120 and 144 =
  20. 20.HCF of 108 and 198 =
  21. 21.HCF of 144 and 45 =
  22. 22.HCF of 56 and 88 =
  23. 23.HCF of 32 and 104 =
  24. 24.HCF of 90 and 66 =
  25. 25.HCF of 210 and 28 =
  26. 26.HCF of 121 and 165 =
  27. 27.HCF of 208 and 247 =
  28. 28.HCF of 80 and 48 =
  29. 29.HCF of 14 and 105 =
  30. 30.HCF of 270 and 126 =
  31. 31.HCF of 28 and 80 =
  32. 32.HCF of 323 and 68 =
  33. 33.HCF of 247 and 76 =
  34. 34.HCF of 27 and 18 =
  35. 35.HCF of 90 and 66 =
  36. 36.HCF of 44 and 209 =
  37. 37.HCF of 50 and 190 =
  38. 38.HCF of 42 and 33 =
  39. 39.HCF of 46 and 345 =
  40. 40.HCF of 39 and 54 =

Answer key

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

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