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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 382 · 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 72 and 48 =
  2. 2.HCF of 408 and 120 =
  3. 3.HCF of 112 and 256 =
  4. 4.HCF of 40 and 18 =
  5. 5.HCF of 119 and 28 =
  6. 6.HCF of 30 and 225 =
  7. 7.HCF of 9 and 57 =
  8. 8.HCF of 36 and 51 =
  9. 9.HCF of 399 and 126 =
  10. 10.HCF of 39 and 247 =
  11. 11.HCF of 368 and 437 =
  12. 12.HCF of 130 and 80 =
  13. 13.HCF of 68 and 72 =
  14. 14.HCF of 26 and 39 =
  15. 15.HCF of 36 and 342 =
  16. 16.HCF of 60 and 52 =
  17. 17.HCF of 100 and 360 =
  18. 18.HCF of 304 and 112 =
  19. 19.HCF of 88 and 330 =
  20. 20.HCF of 378 and 357 =
  21. 21.HCF of 110 and 140 =
  22. 22.HCF of 22 and 8 =
  23. 23.HCF of 323 and 289 =
  24. 24.HCF of 16 and 24 =
  25. 25.HCF of 171 and 135 =
  26. 26.HCF of 45 and 60 =
  27. 27.HCF of 26 and 18 =
  28. 28.HCF of 70 and 90 =
  29. 29.HCF of 28 and 34 =
  30. 30.HCF of 456 and 288 =
  31. 31.HCF of 133 and 35 =
  32. 32.HCF of 375 and 325 =
  33. 33.HCF of 72 and 45 =
  34. 34.HCF of 90 and 110 =
  35. 35.HCF of 90 and 102 =
  36. 36.HCF of 133 and 76 =
  37. 37.HCF of 27 and 48 =
  38. 38.HCF of 160 and 272 =
  39. 39.HCF of 200 and 340 =
  40. 40.HCF of 325 and 125 =

Answer key

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

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