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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 471 · 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 56 and 72 =
  2. 2.HCF of 330 and 88 =
  3. 3.HCF of 275 and 75 =
  4. 4.HCF of 45 and 18 =
  5. 5.HCF of 195 and 45 =
  6. 6.HCF of 260 and 320 =
  7. 7.HCF of 208 and 91 =
  8. 8.HCF of 40 and 96 =
  9. 9.HCF of 77 and 49 =
  10. 10.HCF of 153 and 117 =
  11. 11.HCF of 48 and 9 =
  12. 12.HCF of 120 and 216 =
  13. 13.HCF of 54 and 102 =
  14. 14.HCF of 108 and 198 =
  15. 15.HCF of 120 and 42 =
  16. 16.HCF of 30 and 9 =
  17. 17.HCF of 48 and 114 =
  18. 18.HCF of 70 and 196 =
  19. 19.HCF of 35 and 10 =
  20. 20.HCF of 306 and 289 =
  21. 21.HCF of 66 and 54 =
  22. 22.HCF of 40 and 50 =
  23. 23.HCF of 187 and 68 =
  24. 24.HCF of 9 and 42 =
  25. 25.HCF of 275 and 175 =
  26. 26.HCF of 221 and 85 =
  27. 27.HCF of 69 and 437 =
  28. 28.HCF of 95 and 361 =
  29. 29.HCF of 399 and 210 =
  30. 30.HCF of 182 and 56 =
  31. 31.HCF of 51 and 18 =
  32. 32.HCF of 36 and 22 =
  33. 33.HCF of 108 and 306 =
  34. 34.HCF of 77 and 28 =
  35. 35.HCF of 105 and 60 =
  36. 36.HCF of 16 and 20 =
  37. 37.HCF of 80 and 60 =
  38. 38.HCF of 95 and 100 =
  39. 39.HCF of 304 and 320 =
  40. 40.HCF of 90 and 24 =

Answer key

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

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