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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 464 · 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 30 and 70 =
  2. 2.HCF of 209 and 132 =
  3. 3.HCF of 77 and 42 =
  4. 4.HCF of 198 and 270 =
  5. 5.HCF of 153 and 27 =
  6. 6.HCF of 24 and 228 =
  7. 7.HCF of 128 and 304 =
  8. 8.HCF of 96 and 114 =
  9. 9.HCF of 276 and 391 =
  10. 10.HCF of 63 and 112 =
  11. 11.HCF of 92 and 253 =
  12. 12.HCF of 51 and 30 =
  13. 13.HCF of 340 and 119 =
  14. 14.HCF of 221 and 208 =
  15. 15.HCF of 80 and 55 =
  16. 16.HCF of 285 and 180 =
  17. 17.HCF of 270 and 126 =
  18. 18.HCF of 418 and 242 =
  19. 19.HCF of 92 and 391 =
  20. 20.HCF of 143 and 169 =
  21. 21.HCF of 90 and 70 =
  22. 22.HCF of 105 and 91 =
  23. 23.HCF of 112 and 24 =
  24. 24.HCF of 168 and 288 =
  25. 25.HCF of 224 and 208 =
  26. 26.HCF of 300 and 105 =
  27. 27.HCF of 135 and 150 =
  28. 28.HCF of 90 and 288 =
  29. 29.HCF of 273 and 63 =
  30. 30.HCF of 8 and 30 =
  31. 31.HCF of 133 and 98 =
  32. 32.HCF of 60 and 400 =
  33. 33.HCF of 65 and 78 =
  34. 34.HCF of 36 and 10 =
  35. 35.HCF of 27 and 60 =
  36. 36.HCF of 22 and 18 =
  37. 37.HCF of 140 and 260 =
  38. 38.HCF of 16 and 30 =
  39. 39.HCF of 75 and 180 =
  40. 40.HCF of 14 and 63 =

Answer key

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

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