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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 144 · 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 40 and 22 =
  2. 2.HCF of 425 and 125 =
  3. 3.HCF of 98 and 266 =
  4. 4.HCF of 270 and 234 =
  5. 5.HCF of 91 and 28 =
  6. 6.HCF of 132 and 187 =
  7. 7.HCF of 56 and 80 =
  8. 8.HCF of 35 and 40 =
  9. 9.HCF of 209 and 76 =
  10. 10.HCF of 437 and 322 =
  11. 11.HCF of 100 and 60 =
  12. 12.HCF of 76 and 64 =
  13. 13.HCF of 81 and 63 =
  14. 14.HCF of 195 and 270 =
  15. 15.HCF of 169 and 26 =
  16. 16.HCF of 400 and 180 =
  17. 17.HCF of 57 and 323 =
  18. 18.HCF of 65 and 100 =
  19. 19.HCF of 133 and 14 =
  20. 20.HCF of 330 and 308 =
  21. 21.HCF of 119 and 204 =
  22. 22.HCF of 56 and 104 =
  23. 23.HCF of 368 and 391 =
  24. 24.HCF of 189 and 168 =
  25. 25.HCF of 260 and 40 =
  26. 26.HCF of 114 and 90 =
  27. 27.HCF of 10 and 6 =
  28. 28.HCF of 64 and 104 =
  29. 29.HCF of 42 and 224 =
  30. 30.HCF of 72 and 56 =
  31. 31.HCF of 115 and 138 =
  32. 32.HCF of 336 and 231 =
  33. 33.HCF of 90 and 81 =
  34. 34.HCF of 110 and 418 =
  35. 35.HCF of 260 and 60 =
  36. 36.HCF of 200 and 175 =
  37. 37.HCF of 240 and 108 =
  38. 38.HCF of 312 and 360 =
  39. 39.HCF of 184 and 69 =
  40. 40.HCF of 57 and 152 =

Answer key

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

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