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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 277 · 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 128 and 40 =
  2. 2.HCF of 418 and 308 =
  3. 3.HCF of 42 and 91 =
  4. 4.HCF of 80 and 100 =
  5. 5.HCF of 21 and 119 =
  6. 6.HCF of 130 and 30 =
  7. 7.HCF of 228 and 84 =
  8. 8.HCF of 160 and 110 =
  9. 9.HCF of 45 and 95 =
  10. 10.HCF of 208 and 160 =
  11. 11.HCF of 76 and 285 =
  12. 12.HCF of 340 and 280 =
  13. 13.HCF of 169 and 260 =
  14. 14.HCF of 289 and 204 =
  15. 15.HCF of 207 and 115 =
  16. 16.HCF of 323 and 342 =
  17. 17.HCF of 63 and 28 =
  18. 18.HCF of 32 and 60 =
  19. 19.HCF of 225 and 30 =
  20. 20.HCF of 96 and 54 =
  21. 21.HCF of 70 and 119 =
  22. 22.HCF of 238 and 280 =
  23. 23.HCF of 456 and 360 =
  24. 24.HCF of 35 and 30 =
  25. 25.HCF of 240 and 100 =
  26. 26.HCF of 45 and 10 =
  27. 27.HCF of 30 and 34 =
  28. 28.HCF of 384 and 168 =
  29. 29.HCF of 168 and 240 =
  30. 30.HCF of 247 and 323 =
  31. 31.HCF of 45 and 27 =
  32. 32.HCF of 216 and 480 =
  33. 33.HCF of 80 and 300 =
  34. 34.HCF of 70 and 21 =
  35. 35.HCF of 147 and 63 =
  36. 36.HCF of 196 and 70 =
  37. 37.HCF of 90 and 195 =
  38. 38.HCF of 80 and 30 =
  39. 39.HCF of 100 and 55 =
  40. 40.HCF of 64 and 20 =

Answer key

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

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