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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 809 · 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 26 and 8 =
  2. 2.HCF of 154 and 396 =
  3. 3.HCF of 204 and 156 =
  4. 4.HCF of 176 and 330 =
  5. 5.HCF of 64 and 72 =
  6. 6.HCF of 45 and 10 =
  7. 7.HCF of 323 and 361 =
  8. 8.HCF of 81 and 45 =
  9. 9.HCF of 340 and 300 =
  10. 10.HCF of 110 and 120 =
  11. 11.HCF of 70 and 266 =
  12. 12.HCF of 121 and 33 =
  13. 13.HCF of 190 and 90 =
  14. 14.HCF of 255 and 120 =
  15. 15.HCF of 9 and 33 =
  16. 16.HCF of 12 and 44 =
  17. 17.HCF of 24 and 68 =
  18. 18.HCF of 84 and 91 =
  19. 19.HCF of 63 and 54 =
  20. 20.HCF of 352 and 154 =
  21. 21.HCF of 240 and 228 =
  22. 22.HCF of 34 and 255 =
  23. 23.HCF of 119 and 112 =
  24. 24.HCF of 132 and 72 =
  25. 25.HCF of 144 and 162 =
  26. 26.HCF of 240 and 225 =
  27. 27.HCF of 38 and 247 =
  28. 28.HCF of 418 and 220 =
  29. 29.HCF of 143 and 117 =
  30. 30.HCF of 266 and 154 =
  31. 31.HCF of 76 and 209 =
  32. 32.HCF of 36 and 38 =
  33. 33.HCF of 26 and 40 =
  34. 34.HCF of 66 and 12 =
  35. 35.HCF of 143 and 176 =
  36. 36.HCF of 304 and 224 =
  37. 37.HCF of 42 and 56 =
  38. 38.HCF of 247 and 143 =
  39. 39.HCF of 16 and 52 =
  40. 40.HCF of 221 and 119 =

Answer key

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

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