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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 370 · 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 24 and 16 =
  2. 2.HCF of 40 and 170 =
  3. 3.HCF of 187 and 99 =
  4. 4.HCF of 143 and 65 =
  5. 5.HCF of 114 and 24 =
  6. 6.HCF of 54 and 66 =
  7. 7.HCF of 432 and 120 =
  8. 8.HCF of 357 and 420 =
  9. 9.HCF of 50 and 225 =
  10. 10.HCF of 68 and 20 =
  11. 11.HCF of 34 and 40 =
  12. 12.HCF of 40 and 260 =
  13. 13.HCF of 196 and 70 =
  14. 14.HCF of 64 and 28 =
  15. 15.HCF of 36 and 48 =
  16. 16.HCF of 33 and 121 =
  17. 17.HCF of 128 and 112 =
  18. 18.HCF of 18 and 38 =
  19. 19.HCF of 21 and 140 =
  20. 20.HCF of 285 and 210 =
  21. 21.HCF of 35 and 95 =
  22. 22.HCF of 153 and 162 =
  23. 23.HCF of 216 and 306 =
  24. 24.HCF of 78 and 65 =
  25. 25.HCF of 16 and 120 =
  26. 26.HCF of 21 and 56 =
  27. 27.HCF of 63 and 98 =
  28. 28.HCF of 54 and 60 =
  29. 29.HCF of 180 and 260 =
  30. 30.HCF of 209 and 76 =
  31. 31.HCF of 28 and 63 =
  32. 32.HCF of 320 and 272 =
  33. 33.HCF of 51 and 18 =
  34. 34.HCF of 189 and 336 =
  35. 35.HCF of 36 and 168 =
  36. 36.HCF of 312 and 96 =
  37. 37.HCF of 60 and 190 =
  38. 38.HCF of 294 and 357 =
  39. 39.HCF of 140 and 63 =
  40. 40.HCF of 374 and 396 =

Answer key

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

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