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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 421 · 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 75 and 210 =
  2. 2.HCF of 63 and 84 =
  3. 3.HCF of 76 and 24 =
  4. 4.HCF of 60 and 25 =
  5. 5.HCF of 153 and 72 =
  6. 6.HCF of 280 and 182 =
  7. 7.HCF of 54 and 30 =
  8. 8.HCF of 288 and 342 =
  9. 9.HCF of 352 and 286 =
  10. 10.HCF of 44 and 20 =
  11. 11.HCF of 35 and 28 =
  12. 12.HCF of 240 and 195 =
  13. 13.HCF of 240 and 165 =
  14. 14.HCF of 120 and 105 =
  15. 15.HCF of 72 and 120 =
  16. 16.HCF of 44 and 20 =
  17. 17.HCF of 112 and 154 =
  18. 18.HCF of 180 and 320 =
  19. 19.HCF of 52 and 65 =
  20. 20.HCF of 39 and 45 =
  21. 21.HCF of 170 and 90 =
  22. 22.HCF of 357 and 189 =
  23. 23.HCF of 150 and 190 =
  24. 24.HCF of 60 and 228 =
  25. 25.HCF of 133 and 304 =
  26. 26.HCF of 153 and 27 =
  27. 27.HCF of 117 and 72 =
  28. 28.HCF of 27 and 18 =
  29. 29.HCF of 75 and 165 =
  30. 30.HCF of 36 and 162 =
  31. 31.HCF of 90 and 95 =
  32. 32.HCF of 260 and 340 =
  33. 33.HCF of 20 and 70 =
  34. 34.HCF of 50 and 180 =
  35. 35.HCF of 255 and 210 =
  36. 36.HCF of 187 and 44 =
  37. 37.HCF of 340 and 60 =
  38. 38.HCF of 216 and 60 =
  39. 39.HCF of 57 and 133 =
  40. 40.HCF of 182 and 238 =

Answer key

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

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