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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 601 · 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 323 and 95 =
  2. 2.HCF of 325 and 300 =
  3. 3.HCF of 247 and 91 =
  4. 4.HCF of 42 and 114 =
  5. 5.HCF of 88 and 56 =
  6. 6.HCF of 85 and 323 =
  7. 7.HCF of 32 and 112 =
  8. 8.HCF of 42 and 120 =
  9. 9.HCF of 70 and 30 =
  10. 10.HCF of 108 and 48 =
  11. 11.HCF of 144 and 27 =
  12. 12.HCF of 55 and 65 =
  13. 13.HCF of 80 and 112 =
  14. 14.HCF of 25 and 95 =
  15. 15.HCF of 36 and 99 =
  16. 16.HCF of 252 and 198 =
  17. 17.HCF of 171 and 38 =
  18. 18.HCF of 270 and 36 =
  19. 19.HCF of 260 and 143 =
  20. 20.HCF of 52 and 195 =
  21. 21.HCF of 161 and 46 =
  22. 22.HCF of 396 and 154 =
  23. 23.HCF of 65 and 85 =
  24. 24.HCF of 24 and 52 =
  25. 25.HCF of 320 and 144 =
  26. 26.HCF of 90 and 36 =
  27. 27.HCF of 252 and 266 =
  28. 28.HCF of 92 and 207 =
  29. 29.HCF of 55 and 80 =
  30. 30.HCF of 120 and 340 =
  31. 31.HCF of 420 and 147 =
  32. 32.HCF of 51 and 323 =
  33. 33.HCF of 285 and 195 =
  34. 34.HCF of 195 and 52 =
  35. 35.HCF of 240 and 224 =
  36. 36.HCF of 255 and 120 =
  37. 37.HCF of 90 and 72 =
  38. 38.HCF of 266 and 247 =
  39. 39.HCF of 15 and 39 =
  40. 40.HCF of 150 and 45 =

Answer key

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

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