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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 790 · 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 119 and 102 =
  2. 2.HCF of 90 and 70 =
  3. 3.HCF of 42 and 66 =
  4. 4.HCF of 175 and 150 =
  5. 5.HCF of 12 and 10 =
  6. 6.HCF of 342 and 108 =
  7. 7.HCF of 207 and 92 =
  8. 8.HCF of 12 and 68 =
  9. 9.HCF of 63 and 144 =
  10. 10.HCF of 35 and 28 =
  11. 11.HCF of 60 and 48 =
  12. 12.HCF of 255 and 272 =
  13. 13.HCF of 198 and 252 =
  14. 14.HCF of 56 and 152 =
  15. 15.HCF of 128 and 176 =
  16. 16.HCF of 66 and 440 =
  17. 17.HCF of 50 and 20 =
  18. 18.HCF of 171 and 247 =
  19. 19.HCF of 75 and 195 =
  20. 20.HCF of 171 and 36 =
  21. 21.HCF of 57 and 9 =
  22. 22.HCF of 135 and 153 =
  23. 23.HCF of 120 and 102 =
  24. 24.HCF of 132 and 121 =
  25. 25.HCF of 221 and 117 =
  26. 26.HCF of 150 and 45 =
  27. 27.HCF of 209 and 76 =
  28. 28.HCF of 28 and 32 =
  29. 29.HCF of 60 and 45 =
  30. 30.HCF of 70 and 182 =
  31. 31.HCF of 176 and 286 =
  32. 32.HCF of 165 and 135 =
  33. 33.HCF of 152 and 160 =
  34. 34.HCF of 165 and 176 =
  35. 35.HCF of 160 and 72 =
  36. 36.HCF of 70 and 21 =
  37. 37.HCF of 119 and 221 =
  38. 38.HCF of 114 and 133 =
  39. 39.HCF of 133 and 57 =
  40. 40.HCF of 266 and 28 =

Answer key

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

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