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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 399 · 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 16 and 24 =
  2. 2.HCF of 26 and 10 =
  3. 3.HCF of 91 and 126 =
  4. 4.HCF of 375 and 175 =
  5. 5.HCF of 25 and 70 =
  6. 6.HCF of 180 and 84 =
  7. 7.HCF of 180 and 342 =
  8. 8.HCF of 56 and 160 =
  9. 9.HCF of 169 and 208 =
  10. 10.HCF of 171 and 153 =
  11. 11.HCF of 42 and 231 =
  12. 12.HCF of 323 and 119 =
  13. 13.HCF of 102 and 54 =
  14. 14.HCF of 20 and 50 =
  15. 15.HCF of 42 and 266 =
  16. 16.HCF of 345 and 322 =
  17. 17.HCF of 56 and 42 =
  18. 18.HCF of 144 and 88 =
  19. 19.HCF of 192 and 36 =
  20. 20.HCF of 168 and 456 =
  21. 21.HCF of 225 and 200 =
  22. 22.HCF of 65 and 100 =
  23. 23.HCF of 95 and 57 =
  24. 24.HCF of 34 and 14 =
  25. 25.HCF of 52 and 24 =
  26. 26.HCF of 285 and 75 =
  27. 27.HCF of 408 and 48 =
  28. 28.HCF of 240 and 72 =
  29. 29.HCF of 91 and 14 =
  30. 30.HCF of 20 and 8 =
  31. 31.HCF of 36 and 90 =
  32. 32.HCF of 24 and 80 =
  33. 33.HCF of 247 and 65 =
  34. 34.HCF of 300 and 125 =
  35. 35.HCF of 81 and 153 =
  36. 36.HCF of 54 and 306 =
  37. 37.HCF of 57 and 190 =
  38. 38.HCF of 18 and 57 =
  39. 39.HCF of 91 and 49 =
  40. 40.HCF of 44 and 110 =

Answer key

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

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