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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 834 · 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 20 and 30 =
  2. 2.HCF of 128 and 88 =
  3. 3.HCF of 144 and 136 =
  4. 4.HCF of 66 and 12 =
  5. 5.HCF of 108 and 63 =
  6. 6.HCF of 342 and 180 =
  7. 7.HCF of 91 and 130 =
  8. 8.HCF of 26 and 247 =
  9. 9.HCF of 105 and 90 =
  10. 10.HCF of 15 and 55 =
  11. 11.HCF of 450 and 125 =
  12. 12.HCF of 64 and 44 =
  13. 13.HCF of 75 and 175 =
  14. 14.HCF of 184 and 69 =
  15. 15.HCF of 64 and 136 =
  16. 16.HCF of 48 and 33 =
  17. 17.HCF of 65 and 20 =
  18. 18.HCF of 70 and 133 =
  19. 19.HCF of 60 and 204 =
  20. 20.HCF of 130 and 200 =
  21. 21.HCF of 150 and 160 =
  22. 22.HCF of 51 and 238 =
  23. 23.HCF of 144 and 132 =
  24. 24.HCF of 102 and 78 =
  25. 25.HCF of 216 and 192 =
  26. 26.HCF of 40 and 50 =
  27. 27.HCF of 72 and 228 =
  28. 28.HCF of 95 and 76 =
  29. 29.HCF of 238 and 84 =
  30. 30.HCF of 36 and 30 =
  31. 31.HCF of 140 and 63 =
  32. 32.HCF of 26 and 12 =
  33. 33.HCF of 48 and 42 =
  34. 34.HCF of 34 and 119 =
  35. 35.HCF of 26 and 91 =
  36. 36.HCF of 80 and 380 =
  37. 37.HCF of 375 and 100 =
  38. 38.HCF of 384 and 408 =
  39. 39.HCF of 40 and 220 =
  40. 40.HCF of 24 and 30 =

Answer key

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

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