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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 155 · 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 120 and 264 =
  2. 2.HCF of 160 and 60 =
  3. 3.HCF of 238 and 56 =
  4. 4.HCF of 18 and 26 =
  5. 5.HCF of 100 and 325 =
  6. 6.HCF of 180 and 126 =
  7. 7.HCF of 54 and 90 =
  8. 8.HCF of 153 and 34 =
  9. 9.HCF of 294 and 273 =
  10. 10.HCF of 66 and 440 =
  11. 11.HCF of 26 and 28 =
  12. 12.HCF of 99 and 126 =
  13. 13.HCF of 80 and 72 =
  14. 14.HCF of 76 and 64 =
  15. 15.HCF of 114 and 209 =
  16. 16.HCF of 242 and 132 =
  17. 17.HCF of 28 and 44 =
  18. 18.HCF of 216 and 168 =
  19. 19.HCF of 240 and 272 =
  20. 20.HCF of 34 and 187 =
  21. 21.HCF of 325 and 50 =
  22. 22.HCF of 220 and 121 =
  23. 23.HCF of 56 and 42 =
  24. 24.HCF of 16 and 88 =
  25. 25.HCF of 35 and 15 =
  26. 26.HCF of 42 and 9 =
  27. 27.HCF of 77 and 14 =
  28. 28.HCF of 72 and 162 =
  29. 29.HCF of 95 and 55 =
  30. 30.HCF of 24 and 33 =
  31. 31.HCF of 286 and 440 =
  32. 32.HCF of 273 and 231 =
  33. 33.HCF of 375 and 200 =
  34. 34.HCF of 85 and 153 =
  35. 35.HCF of 48 and 21 =
  36. 36.HCF of 38 and 32 =
  37. 37.HCF of 16 and 10 =
  38. 38.HCF of 418 and 176 =
  39. 39.HCF of 65 and 208 =
  40. 40.HCF of 60 and 50 =

Answer key

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

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