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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 226 · 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 320 and 60 =
  2. 2.HCF of 209 and 361 =
  3. 3.HCF of 154 and 55 =
  4. 4.HCF of 22 and 24 =
  5. 5.HCF of 75 and 500 =
  6. 6.HCF of 84 and 49 =
  7. 7.HCF of 240 and 255 =
  8. 8.HCF of 52 and 65 =
  9. 9.HCF of 49 and 77 =
  10. 10.HCF of 380 and 209 =
  11. 11.HCF of 160 and 112 =
  12. 12.HCF of 42 and 33 =
  13. 13.HCF of 120 and 228 =
  14. 14.HCF of 60 and 9 =
  15. 15.HCF of 60 and 192 =
  16. 16.HCF of 54 and 252 =
  17. 17.HCF of 39 and 221 =
  18. 18.HCF of 45 and 30 =
  19. 19.HCF of 140 and 40 =
  20. 20.HCF of 147 and 189 =
  21. 21.HCF of 72 and 342 =
  22. 22.HCF of 143 and 78 =
  23. 23.HCF of 18 and 30 =
  24. 24.HCF of 26 and 195 =
  25. 25.HCF of 56 and 160 =
  26. 26.HCF of 34 and 38 =
  27. 27.HCF of 84 and 102 =
  28. 28.HCF of 391 and 299 =
  29. 29.HCF of 342 and 90 =
  30. 30.HCF of 208 and 65 =
  31. 31.HCF of 42 and 357 =
  32. 32.HCF of 260 and 40 =
  33. 33.HCF of 175 and 425 =
  34. 34.HCF of 28 and 22 =
  35. 35.HCF of 252 and 147 =
  36. 36.HCF of 52 and 16 =
  37. 37.HCF of 114 and 108 =
  38. 38.HCF of 121 and 66 =
  39. 39.HCF of 90 and 216 =
  40. 40.HCF of 63 and 42 =

Answer key

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

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