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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 140 · 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 63 and 18 =
  2. 2.HCF of 78 and 42 =
  3. 3.HCF of 136 and 255 =
  4. 4.HCF of 84 and 90 =
  5. 5.HCF of 20 and 18 =
  6. 6.HCF of 56 and 210 =
  7. 7.HCF of 4 and 14 =
  8. 8.HCF of 51 and 60 =
  9. 9.HCF of 6 and 57 =
  10. 10.HCF of 240 and 75 =
  11. 11.HCF of 42 and 36 =
  12. 12.HCF of 152 and 133 =
  13. 13.HCF of 360 and 380 =
  14. 14.HCF of 22 and 4 =
  15. 15.HCF of 120 and 105 =
  16. 16.HCF of 91 and 52 =
  17. 17.HCF of 140 and 300 =
  18. 18.HCF of 380 and 120 =
  19. 19.HCF of 420 and 231 =
  20. 20.HCF of 72 and 336 =
  21. 21.HCF of 128 and 72 =
  22. 22.HCF of 88 and 209 =
  23. 23.HCF of 456 and 288 =
  24. 24.HCF of 66 and 242 =
  25. 25.HCF of 153 and 340 =
  26. 26.HCF of 161 and 276 =
  27. 27.HCF of 30 and 85 =
  28. 28.HCF of 143 and 234 =
  29. 29.HCF of 28 and 34 =
  30. 30.HCF of 30 and 12 =
  31. 31.HCF of 120 and 192 =
  32. 32.HCF of 21 and 70 =
  33. 33.HCF of 60 and 114 =
  34. 34.HCF of 437 and 92 =
  35. 35.HCF of 306 and 270 =
  36. 36.HCF of 32 and 208 =
  37. 37.HCF of 285 and 300 =
  38. 38.HCF of 272 and 192 =
  39. 39.HCF of 15 and 39 =
  40. 40.HCF of 57 and 380 =

Answer key

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

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