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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 821 · 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 4 and 6 =
  2. 2.HCF of 63 and 98 =
  3. 3.HCF of 182 and 126 =
  4. 4.HCF of 32 and 38 =
  5. 5.HCF of 289 and 136 =
  6. 6.HCF of 24 and 60 =
  7. 7.HCF of 147 and 252 =
  8. 8.HCF of 45 and 30 =
  9. 9.HCF of 28 and 63 =
  10. 10.HCF of 330 and 374 =
  11. 11.HCF of 190 and 120 =
  12. 12.HCF of 90 and 170 =
  13. 13.HCF of 70 and 170 =
  14. 14.HCF of 150 and 125 =
  15. 15.HCF of 240 and 195 =
  16. 16.HCF of 207 and 253 =
  17. 17.HCF of 104 and 247 =
  18. 18.HCF of 150 and 70 =
  19. 19.HCF of 27 and 63 =
  20. 20.HCF of 85 and 40 =
  21. 21.HCF of 84 and 24 =
  22. 22.HCF of 120 and 128 =
  23. 23.HCF of 77 and 49 =
  24. 24.HCF of 80 and 72 =
  25. 25.HCF of 375 and 425 =
  26. 26.HCF of 208 and 176 =
  27. 27.HCF of 104 and 117 =
  28. 28.HCF of 289 and 306 =
  29. 29.HCF of 204 and 108 =
  30. 30.HCF of 28 and 30 =
  31. 31.HCF of 54 and 126 =
  32. 32.HCF of 70 and 63 =
  33. 33.HCF of 56 and 104 =
  34. 34.HCF of 18 and 51 =
  35. 35.HCF of 6 and 28 =
  36. 36.HCF of 25 and 90 =
  37. 37.HCF of 33 and 209 =
  38. 38.HCF of 18 and 34 =
  39. 39.HCF of 110 and 40 =
  40. 40.HCF of 55 and 95 =

Answer key

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

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