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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 172 · 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 75 and 250 =
  2. 2.HCF of 18 and 40 =
  3. 3.HCF of 475 and 75 =
  4. 4.HCF of 304 and 240 =
  5. 5.HCF of 264 and 336 =
  6. 6.HCF of 24 and 42 =
  7. 7.HCF of 176 and 55 =
  8. 8.HCF of 12 and 28 =
  9. 9.HCF of 136 and 24 =
  10. 10.HCF of 33 and 187 =
  11. 11.HCF of 247 and 65 =
  12. 12.HCF of 128 and 136 =
  13. 13.HCF of 28 and 119 =
  14. 14.HCF of 228 and 180 =
  15. 15.HCF of 44 and 80 =
  16. 16.HCF of 209 and 95 =
  17. 17.HCF of 54 and 96 =
  18. 18.HCF of 60 and 95 =
  19. 19.HCF of 192 and 176 =
  20. 20.HCF of 95 and 50 =
  21. 21.HCF of 100 and 110 =
  22. 22.HCF of 247 and 95 =
  23. 23.HCF of 300 and 285 =
  24. 24.HCF of 72 and 156 =
  25. 25.HCF of 190 and 170 =
  26. 26.HCF of 280 and 180 =
  27. 27.HCF of 323 and 361 =
  28. 28.HCF of 221 and 156 =
  29. 29.HCF of 336 and 408 =
  30. 30.HCF of 160 and 130 =
  31. 31.HCF of 45 and 10 =
  32. 32.HCF of 63 and 14 =
  33. 33.HCF of 170 and 40 =
  34. 34.HCF of 90 and 306 =
  35. 35.HCF of 375 and 400 =
  36. 36.HCF of 308 and 110 =
  37. 37.HCF of 225 and 210 =
  38. 38.HCF of 140 and 77 =
  39. 39.HCF of 25 and 65 =
  40. 40.HCF of 324 and 90 =

Answer key

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

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