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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 151 · 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 80 and 25 =
  2. 2.HCF of 112 and 21 =
  3. 3.HCF of 161 and 230 =
  4. 4.HCF of 8 and 14 =
  5. 5.HCF of 375 and 475 =
  6. 6.HCF of 195 and 169 =
  7. 7.HCF of 85 and 221 =
  8. 8.HCF of 120 and 48 =
  9. 9.HCF of 102 and 120 =
  10. 10.HCF of 95 and 209 =
  11. 11.HCF of 198 and 110 =
  12. 12.HCF of 39 and 21 =
  13. 13.HCF of 72 and 198 =
  14. 14.HCF of 234 and 126 =
  15. 15.HCF of 99 and 162 =
  16. 16.HCF of 112 and 176 =
  17. 17.HCF of 36 and 198 =
  18. 18.HCF of 108 and 306 =
  19. 19.HCF of 208 and 221 =
  20. 20.HCF of 200 and 60 =
  21. 21.HCF of 80 and 45 =
  22. 22.HCF of 128 and 104 =
  23. 23.HCF of 25 and 55 =
  24. 24.HCF of 150 and 105 =
  25. 25.HCF of 102 and 18 =
  26. 26.HCF of 221 and 102 =
  27. 27.HCF of 437 and 368 =
  28. 28.HCF of 76 and 95 =
  29. 29.HCF of 171 and 247 =
  30. 30.HCF of 55 and 44 =
  31. 31.HCF of 54 and 15 =
  32. 32.HCF of 42 and 105 =
  33. 33.HCF of 300 and 80 =
  34. 34.HCF of 153 and 187 =
  35. 35.HCF of 162 and 180 =
  36. 36.HCF of 380 and 171 =
  37. 37.HCF of 91 and 119 =
  38. 38.HCF of 50 and 75 =
  39. 39.HCF of 54 and 24 =
  40. 40.HCF of 55 and 198 =

Answer key

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

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