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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 518 · 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 154 and 88 =
  2. 2.HCF of 28 and 72 =
  3. 3.HCF of 260 and 117 =
  4. 4.HCF of 54 and 36 =
  5. 5.HCF of 110 and 60 =
  6. 6.HCF of 189 and 168 =
  7. 7.HCF of 143 and 221 =
  8. 8.HCF of 184 and 161 =
  9. 9.HCF of 80 and 170 =
  10. 10.HCF of 72 and 52 =
  11. 11.HCF of 247 and 266 =
  12. 12.HCF of 110 and 190 =
  13. 13.HCF of 30 and 70 =
  14. 14.HCF of 156 and 36 =
  15. 15.HCF of 175 and 50 =
  16. 16.HCF of 36 and 192 =
  17. 17.HCF of 120 and 84 =
  18. 18.HCF of 24 and 64 =
  19. 19.HCF of 240 and 72 =
  20. 20.HCF of 418 and 132 =
  21. 21.HCF of 15 and 20 =
  22. 22.HCF of 221 and 78 =
  23. 23.HCF of 56 and 238 =
  24. 24.HCF of 28 and 126 =
  25. 25.HCF of 8 and 6 =
  26. 26.HCF of 208 and 160 =
  27. 27.HCF of 323 and 272 =
  28. 28.HCF of 12 and 9 =
  29. 29.HCF of 48 and 180 =
  30. 30.HCF of 48 and 88 =
  31. 31.HCF of 460 and 253 =
  32. 32.HCF of 132 and 108 =
  33. 33.HCF of 165 and 60 =
  34. 34.HCF of 225 and 500 =
  35. 35.HCF of 72 and 160 =
  36. 36.HCF of 308 and 330 =
  37. 37.HCF of 91 and 28 =
  38. 38.HCF of 60 and 220 =
  39. 39.HCF of 18 and 57 =
  40. 40.HCF of 195 and 105 =

Answer key

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

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