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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 342 · 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 91 and 42 =
  2. 2.HCF of 260 and 39 =
  3. 3.HCF of 108 and 96 =
  4. 4.HCF of 24 and 32 =
  5. 5.HCF of 208 and 304 =
  6. 6.HCF of 266 and 224 =
  7. 7.HCF of 437 and 207 =
  8. 8.HCF of 210 and 56 =
  9. 9.HCF of 88 and 80 =
  10. 10.HCF of 48 and 108 =
  11. 11.HCF of 54 and 72 =
  12. 12.HCF of 63 and 77 =
  13. 13.HCF of 255 and 105 =
  14. 14.HCF of 286 and 242 =
  15. 15.HCF of 95 and 40 =
  16. 16.HCF of 108 and 60 =
  17. 17.HCF of 171 and 38 =
  18. 18.HCF of 70 and 150 =
  19. 19.HCF of 91 and 42 =
  20. 20.HCF of 32 and 30 =
  21. 21.HCF of 480 and 168 =
  22. 22.HCF of 209 and 266 =
  23. 23.HCF of 336 and 147 =
  24. 24.HCF of 120 and 380 =
  25. 25.HCF of 300 and 425 =
  26. 26.HCF of 24 and 30 =
  27. 27.HCF of 169 and 91 =
  28. 28.HCF of 51 and 24 =
  29. 29.HCF of 120 and 195 =
  30. 30.HCF of 46 and 253 =
  31. 31.HCF of 26 and 22 =
  32. 32.HCF of 91 and 221 =
  33. 33.HCF of 56 and 128 =
  34. 34.HCF of 80 and 72 =
  35. 35.HCF of 126 and 49 =
  36. 36.HCF of 286 and 110 =
  37. 37.HCF of 308 and 418 =
  38. 38.HCF of 66 and 90 =
  39. 39.HCF of 48 and 128 =
  40. 40.HCF of 180 and 190 =

Answer key

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

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