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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 260 · 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 195 and 221 =
  2. 2.HCF of 156 and 168 =
  3. 3.HCF of 100 and 325 =
  4. 4.HCF of 6 and 39 =
  5. 5.HCF of 38 and 20 =
  6. 6.HCF of 72 and 336 =
  7. 7.HCF of 375 and 350 =
  8. 8.HCF of 72 and 48 =
  9. 9.HCF of 133 and 126 =
  10. 10.HCF of 25 and 40 =
  11. 11.HCF of 437 and 161 =
  12. 12.HCF of 168 and 456 =
  13. 13.HCF of 28 and 68 =
  14. 14.HCF of 126 and 28 =
  15. 15.HCF of 299 and 276 =
  16. 16.HCF of 49 and 91 =
  17. 17.HCF of 154 and 396 =
  18. 18.HCF of 420 and 63 =
  19. 19.HCF of 110 and 286 =
  20. 20.HCF of 32 and 24 =
  21. 21.HCF of 44 and 12 =
  22. 22.HCF of 110 and 20 =
  23. 23.HCF of 187 and 34 =
  24. 24.HCF of 272 and 224 =
  25. 25.HCF of 160 and 56 =
  26. 26.HCF of 90 and 63 =
  27. 27.HCF of 6 and 8 =
  28. 28.HCF of 207 and 184 =
  29. 29.HCF of 96 and 456 =
  30. 30.HCF of 400 and 180 =
  31. 31.HCF of 288 and 270 =
  32. 32.HCF of 160 and 300 =
  33. 33.HCF of 285 and 270 =
  34. 34.HCF of 57 and 323 =
  35. 35.HCF of 38 and 95 =
  36. 36.HCF of 132 and 121 =
  37. 37.HCF of 374 and 44 =
  38. 38.HCF of 374 and 220 =
  39. 39.HCF of 18 and 24 =
  40. 40.HCF of 210 and 238 =

Answer key

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

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