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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 770 · 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 80 and 64 =
  2. 2.HCF of 150 and 40 =
  3. 3.HCF of 189 and 210 =
  4. 4.HCF of 500 and 75 =
  5. 5.HCF of 208 and 144 =
  6. 6.HCF of 16 and 44 =
  7. 7.HCF of 85 and 80 =
  8. 8.HCF of 253 and 69 =
  9. 9.HCF of 65 and 10 =
  10. 10.HCF of 266 and 323 =
  11. 11.HCF of 240 and 168 =
  12. 12.HCF of 70 and 90 =
  13. 13.HCF of 66 and 286 =
  14. 14.HCF of 380 and 57 =
  15. 15.HCF of 77 and 187 =
  16. 16.HCF of 256 and 304 =
  17. 17.HCF of 176 and 224 =
  18. 18.HCF of 400 and 475 =
  19. 19.HCF of 27 and 48 =
  20. 20.HCF of 357 and 84 =
  21. 21.HCF of 32 and 208 =
  22. 22.HCF of 36 and 96 =
  23. 23.HCF of 144 and 88 =
  24. 24.HCF of 460 and 69 =
  25. 25.HCF of 176 and 48 =
  26. 26.HCF of 66 and 78 =
  27. 27.HCF of 144 and 270 =
  28. 28.HCF of 48 and 36 =
  29. 29.HCF of 144 and 168 =
  30. 30.HCF of 165 and 88 =
  31. 31.HCF of 108 and 48 =
  32. 32.HCF of 187 and 272 =
  33. 33.HCF of 51 and 9 =
  34. 34.HCF of 180 and 24 =
  35. 35.HCF of 15 and 100 =
  36. 36.HCF of 50 and 15 =
  37. 37.HCF of 323 and 342 =
  38. 38.HCF of 42 and 78 =
  39. 39.HCF of 198 and 209 =
  40. 40.HCF of 162 and 126 =

Answer key

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

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