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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 611 · 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 378 and 273 =
  2. 2.HCF of 95 and 15 =
  3. 3.HCF of 253 and 276 =
  4. 4.HCF of 399 and 420 =
  5. 5.HCF of 140 and 160 =
  6. 6.HCF of 68 and 221 =
  7. 7.HCF of 208 and 160 =
  8. 8.HCF of 114 and 18 =
  9. 9.HCF of 36 and 42 =
  10. 10.HCF of 266 and 168 =
  11. 11.HCF of 378 and 105 =
  12. 12.HCF of 195 and 270 =
  13. 13.HCF of 161 and 253 =
  14. 14.HCF of 68 and 40 =
  15. 15.HCF of 220 and 100 =
  16. 16.HCF of 171 and 54 =
  17. 17.HCF of 36 and 81 =
  18. 18.HCF of 21 and 140 =
  19. 19.HCF of 225 and 475 =
  20. 20.HCF of 330 and 286 =
  21. 21.HCF of 32 and 52 =
  22. 22.HCF of 184 and 115 =
  23. 23.HCF of 345 and 253 =
  24. 24.HCF of 112 and 98 =
  25. 25.HCF of 34 and 16 =
  26. 26.HCF of 108 and 63 =
  27. 27.HCF of 44 and 374 =
  28. 28.HCF of 90 and 165 =
  29. 29.HCF of 171 and 135 =
  30. 30.HCF of 231 and 189 =
  31. 31.HCF of 152 and 32 =
  32. 32.HCF of 72 and 66 =
  33. 33.HCF of 55 and 70 =
  34. 34.HCF of 6 and 39 =
  35. 35.HCF of 12 and 28 =
  36. 36.HCF of 70 and 20 =
  37. 37.HCF of 234 and 169 =
  38. 38.HCF of 286 and 220 =
  39. 39.HCF of 51 and 119 =
  40. 40.HCF of 35 and 49 =

Answer key

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

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