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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 228 · 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 56 and 40 =
  2. 2.HCF of 88 and 77 =
  3. 3.HCF of 308 and 374 =
  4. 4.HCF of 231 and 147 =
  5. 5.HCF of 90 and 65 =
  6. 6.HCF of 102 and 24 =
  7. 7.HCF of 125 and 400 =
  8. 8.HCF of 24 and 14 =
  9. 9.HCF of 49 and 91 =
  10. 10.HCF of 72 and 30 =
  11. 11.HCF of 80 and 85 =
  12. 12.HCF of 192 and 120 =
  13. 13.HCF of 56 and 126 =
  14. 14.HCF of 112 and 208 =
  15. 15.HCF of 69 and 437 =
  16. 16.HCF of 209 and 57 =
  17. 17.HCF of 77 and 105 =
  18. 18.HCF of 34 and 8 =
  19. 19.HCF of 136 and 104 =
  20. 20.HCF of 60 and 35 =
  21. 21.HCF of 66 and 18 =
  22. 22.HCF of 224 and 126 =
  23. 23.HCF of 204 and 24 =
  24. 24.HCF of 126 and 133 =
  25. 25.HCF of 36 and 84 =
  26. 26.HCF of 154 and 198 =
  27. 27.HCF of 20 and 110 =
  28. 28.HCF of 221 and 204 =
  29. 29.HCF of 126 and 119 =
  30. 30.HCF of 170 and 30 =
  31. 31.HCF of 32 and 120 =
  32. 32.HCF of 119 and 68 =
  33. 33.HCF of 15 and 21 =
  34. 34.HCF of 119 and 49 =
  35. 35.HCF of 160 and 150 =
  36. 36.HCF of 40 and 28 =
  37. 37.HCF of 50 and 275 =
  38. 38.HCF of 242 and 418 =
  39. 39.HCF of 162 and 36 =
  40. 40.HCF of 16 and 38 =

Answer key

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

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