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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 997 · 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 125 and 450 =
  2. 2.HCF of 6 and 20 =
  3. 3.HCF of 136 and 289 =
  4. 4.HCF of 136 and 323 =
  5. 5.HCF of 165 and 88 =
  6. 6.HCF of 323 and 306 =
  7. 7.HCF of 143 and 234 =
  8. 8.HCF of 12 and 39 =
  9. 9.HCF of 162 and 72 =
  10. 10.HCF of 154 and 198 =
  11. 11.HCF of 288 and 234 =
  12. 12.HCF of 42 and 24 =
  13. 13.HCF of 156 and 91 =
  14. 14.HCF of 114 and 95 =
  15. 15.HCF of 57 and 304 =
  16. 16.HCF of 120 and 110 =
  17. 17.HCF of 90 and 153 =
  18. 18.HCF of 35 and 85 =
  19. 19.HCF of 104 and 136 =
  20. 20.HCF of 21 and 14 =
  21. 21.HCF of 400 and 325 =
  22. 22.HCF of 105 and 165 =
  23. 23.HCF of 375 and 275 =
  24. 24.HCF of 99 and 171 =
  25. 25.HCF of 32 and 14 =
  26. 26.HCF of 40 and 24 =
  27. 27.HCF of 216 and 234 =
  28. 28.HCF of 135 and 255 =
  29. 29.HCF of 225 and 100 =
  30. 30.HCF of 75 and 250 =
  31. 31.HCF of 374 and 66 =
  32. 32.HCF of 65 and 39 =
  33. 33.HCF of 126 and 54 =
  34. 34.HCF of 456 and 216 =
  35. 35.HCF of 57 and 12 =
  36. 36.HCF of 340 and 300 =
  37. 37.HCF of 24 and 51 =
  38. 38.HCF of 90 and 85 =
  39. 39.HCF of 100 and 340 =
  40. 40.HCF of 161 and 299 =

Answer key

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

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