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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 462 · 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 440 and 374 =
  2. 2.HCF of 38 and 40 =
  3. 3.HCF of 24 and 10 =
  4. 4.HCF of 72 and 171 =
  5. 5.HCF of 95 and 20 =
  6. 6.HCF of 195 and 45 =
  7. 7.HCF of 209 and 33 =
  8. 8.HCF of 27 and 126 =
  9. 9.HCF of 35 and 28 =
  10. 10.HCF of 418 and 308 =
  11. 11.HCF of 42 and 36 =
  12. 12.HCF of 85 and 80 =
  13. 13.HCF of 70 and 168 =
  14. 14.HCF of 126 and 36 =
  15. 15.HCF of 75 and 45 =
  16. 16.HCF of 391 and 437 =
  17. 17.HCF of 21 and 70 =
  18. 18.HCF of 323 and 34 =
  19. 19.HCF of 77 and 98 =
  20. 20.HCF of 361 and 95 =
  21. 21.HCF of 312 and 480 =
  22. 22.HCF of 51 and 34 =
  23. 23.HCF of 384 and 72 =
  24. 24.HCF of 238 and 280 =
  25. 25.HCF of 162 and 342 =
  26. 26.HCF of 182 and 210 =
  27. 27.HCF of 350 and 225 =
  28. 28.HCF of 56 and 98 =
  29. 29.HCF of 98 and 21 =
  30. 30.HCF of 120 and 42 =
  31. 31.HCF of 228 and 240 =
  32. 32.HCF of 216 and 480 =
  33. 33.HCF of 247 and 195 =
  34. 34.HCF of 48 and 80 =
  35. 35.HCF of 60 and 9 =
  36. 36.HCF of 48 and 256 =
  37. 37.HCF of 60 and 27 =
  38. 38.HCF of 38 and 323 =
  39. 39.HCF of 15 and 51 =
  40. 40.HCF of 88 and 330 =

Answer key

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

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