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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 935 · 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 78 and 91 =
  2. 2.HCF of 247 and 38 =
  3. 3.HCF of 112 and 42 =
  4. 4.HCF of 120 and 100 =
  5. 5.HCF of 70 and 196 =
  6. 6.HCF of 30 and 200 =
  7. 7.HCF of 119 and 51 =
  8. 8.HCF of 112 and 48 =
  9. 9.HCF of 260 and 143 =
  10. 10.HCF of 91 and 104 =
  11. 11.HCF of 133 and 21 =
  12. 12.HCF of 168 and 480 =
  13. 13.HCF of 96 and 208 =
  14. 14.HCF of 6 and 33 =
  15. 15.HCF of 6 and 40 =
  16. 16.HCF of 187 and 323 =
  17. 17.HCF of 209 and 154 =
  18. 18.HCF of 24 and 27 =
  19. 19.HCF of 28 and 70 =
  20. 20.HCF of 104 and 128 =
  21. 21.HCF of 51 and 12 =
  22. 22.HCF of 10 and 4 =
  23. 23.HCF of 231 and 126 =
  24. 24.HCF of 161 and 368 =
  25. 25.HCF of 85 and 10 =
  26. 26.HCF of 225 and 285 =
  27. 27.HCF of 180 and 117 =
  28. 28.HCF of 12 and 76 =
  29. 29.HCF of 204 and 240 =
  30. 30.HCF of 56 and 160 =
  31. 31.HCF of 96 and 54 =
  32. 32.HCF of 150 and 275 =
  33. 33.HCF of 28 and 18 =
  34. 34.HCF of 12 and 39 =
  35. 35.HCF of 352 and 418 =
  36. 36.HCF of 153 and 81 =
  37. 37.HCF of 132 and 154 =
  38. 38.HCF of 34 and 14 =
  39. 39.HCF of 27 and 63 =
  40. 40.HCF of 30 and 85 =

Answer key

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

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