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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 972 · 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 100 and 225 =
  2. 2.HCF of 84 and 60 =
  3. 3.HCF of 340 and 119 =
  4. 4.HCF of 304 and 285 =
  5. 5.HCF of 187 and 33 =
  6. 6.HCF of 91 and 42 =
  7. 7.HCF of 32 and 76 =
  8. 8.HCF of 39 and 130 =
  9. 9.HCF of 10 and 25 =
  10. 10.HCF of 195 and 91 =
  11. 11.HCF of 48 and 64 =
  12. 12.HCF of 176 and 242 =
  13. 13.HCF of 120 and 64 =
  14. 14.HCF of 99 and 36 =
  15. 15.HCF of 150 and 275 =
  16. 16.HCF of 77 and 28 =
  17. 17.HCF of 96 and 312 =
  18. 18.HCF of 132 and 374 =
  19. 19.HCF of 72 and 120 =
  20. 20.HCF of 48 and 272 =
  21. 21.HCF of 156 and 216 =
  22. 22.HCF of 324 and 198 =
  23. 23.HCF of 264 and 144 =
  24. 24.HCF of 357 and 84 =
  25. 25.HCF of 340 and 380 =
  26. 26.HCF of 128 and 24 =
  27. 27.HCF of 64 and 152 =
  28. 28.HCF of 168 and 144 =
  29. 29.HCF of 55 and 45 =
  30. 30.HCF of 35 and 90 =
  31. 31.HCF of 209 and 66 =
  32. 32.HCF of 225 and 350 =
  33. 33.HCF of 72 and 240 =
  34. 34.HCF of 247 and 130 =
  35. 35.HCF of 220 and 400 =
  36. 36.HCF of 95 and 35 =
  37. 37.HCF of 22 and 34 =
  38. 38.HCF of 312 and 96 =
  39. 39.HCF of 57 and 15 =
  40. 40.HCF of 154 and 209 =

Answer key

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

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