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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 206 · 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 88 and 99 =
  2. 2.HCF of 15 and 18 =
  3. 3.HCF of 52 and 40 =
  4. 4.HCF of 24 and 114 =
  5. 5.HCF of 176 and 33 =
  6. 6.HCF of 22 and 34 =
  7. 7.HCF of 28 and 68 =
  8. 8.HCF of 35 and 10 =
  9. 9.HCF of 247 and 260 =
  10. 10.HCF of 320 and 220 =
  11. 11.HCF of 266 and 252 =
  12. 12.HCF of 15 and 21 =
  13. 13.HCF of 30 and 36 =
  14. 14.HCF of 152 and 16 =
  15. 15.HCF of 143 and 39 =
  16. 16.HCF of 90 and 63 =
  17. 17.HCF of 20 and 36 =
  18. 18.HCF of 34 and 22 =
  19. 19.HCF of 65 and 80 =
  20. 20.HCF of 80 and 35 =
  21. 21.HCF of 64 and 208 =
  22. 22.HCF of 51 and 27 =
  23. 23.HCF of 42 and 30 =
  24. 24.HCF of 98 and 133 =
  25. 25.HCF of 108 and 156 =
  26. 26.HCF of 68 and 32 =
  27. 27.HCF of 30 and 38 =
  28. 28.HCF of 56 and 88 =
  29. 29.HCF of 144 and 128 =
  30. 30.HCF of 75 and 135 =
  31. 31.HCF of 44 and 121 =
  32. 32.HCF of 220 and 33 =
  33. 33.HCF of 150 and 275 =
  34. 34.HCF of 49 and 63 =
  35. 35.HCF of 72 and 336 =
  36. 36.HCF of 198 and 306 =
  37. 37.HCF of 55 and 66 =
  38. 38.HCF of 272 and 80 =
  39. 39.HCF of 135 and 165 =
  40. 40.HCF of 304 and 160 =

Answer key

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

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