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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 488 · 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 70 and 190 =
  2. 2.HCF of 380 and 209 =
  3. 3.HCF of 18 and 57 =
  4. 4.HCF of 114 and 12 =
  5. 5.HCF of 42 and 28 =
  6. 6.HCF of 30 and 195 =
  7. 7.HCF of 12 and 26 =
  8. 8.HCF of 322 and 345 =
  9. 9.HCF of 88 and 66 =
  10. 10.HCF of 80 and 260 =
  11. 11.HCF of 55 and 20 =
  12. 12.HCF of 75 and 500 =
  13. 13.HCF of 70 and 63 =
  14. 14.HCF of 68 and 28 =
  15. 15.HCF of 4 and 10 =
  16. 16.HCF of 180 and 220 =
  17. 17.HCF of 168 and 216 =
  18. 18.HCF of 84 and 133 =
  19. 19.HCF of 110 and 154 =
  20. 20.HCF of 190 and 130 =
  21. 21.HCF of 69 and 184 =
  22. 22.HCF of 64 and 104 =
  23. 23.HCF of 312 and 144 =
  24. 24.HCF of 150 and 135 =
  25. 25.HCF of 264 and 408 =
  26. 26.HCF of 171 and 126 =
  27. 27.HCF of 44 and 24 =
  28. 28.HCF of 66 and 108 =
  29. 29.HCF of 306 and 289 =
  30. 30.HCF of 10 and 4 =
  31. 31.HCF of 99 and 209 =
  32. 32.HCF of 132 and 154 =
  33. 33.HCF of 85 and 35 =
  34. 34.HCF of 88 and 330 =
  35. 35.HCF of 80 and 28 =
  36. 36.HCF of 68 and 52 =
  37. 37.HCF of 135 and 240 =
  38. 38.HCF of 120 and 88 =
  39. 39.HCF of 34 and 18 =
  40. 40.HCF of 100 and 425 =

Answer key

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

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