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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 998 · 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 30 =
  2. 2.HCF of 198 and 440 =
  3. 3.HCF of 63 and 18 =
  4. 4.HCF of 342 and 162 =
  5. 5.HCF of 112 and 64 =
  6. 6.HCF of 57 and 54 =
  7. 7.HCF of 204 and 24 =
  8. 8.HCF of 42 and 108 =
  9. 9.HCF of 168 and 132 =
  10. 10.HCF of 91 and 234 =
  11. 11.HCF of 85 and 68 =
  12. 12.HCF of 91 and 35 =
  13. 13.HCF of 165 and 45 =
  14. 14.HCF of 408 and 432 =
  15. 15.HCF of 204 and 289 =
  16. 16.HCF of 374 and 88 =
  17. 17.HCF of 36 and 117 =
  18. 18.HCF of 80 and 136 =
  19. 19.HCF of 70 and 133 =
  20. 20.HCF of 77 and 121 =
  21. 21.HCF of 96 and 216 =
  22. 22.HCF of 171 and 126 =
  23. 23.HCF of 75 and 120 =
  24. 24.HCF of 299 and 437 =
  25. 25.HCF of 266 and 98 =
  26. 26.HCF of 216 and 342 =
  27. 27.HCF of 220 and 240 =
  28. 28.HCF of 12 and 15 =
  29. 29.HCF of 48 and 64 =
  30. 30.HCF of 63 and 49 =
  31. 31.HCF of 77 and 21 =
  32. 32.HCF of 105 and 195 =
  33. 33.HCF of 119 and 42 =
  34. 34.HCF of 24 and 45 =
  35. 35.HCF of 300 and 255 =
  36. 36.HCF of 57 and 133 =
  37. 37.HCF of 330 and 374 =
  38. 38.HCF of 20 and 22 =
  39. 39.HCF of 96 and 112 =
  40. 40.HCF of 35 and 14 =

Answer key

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

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