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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 578 · 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 50 and 180 =
  2. 2.HCF of 84 and 180 =
  3. 3.HCF of 44 and 28 =
  4. 4.HCF of 322 and 299 =
  5. 5.HCF of 153 and 289 =
  6. 6.HCF of 300 and 320 =
  7. 7.HCF of 32 and 6 =
  8. 8.HCF of 391 and 322 =
  9. 9.HCF of 57 and 190 =
  10. 10.HCF of 200 and 175 =
  11. 11.HCF of 99 and 18 =
  12. 12.HCF of 20 and 6 =
  13. 13.HCF of 24 and 16 =
  14. 14.HCF of 48 and 256 =
  15. 15.HCF of 352 and 242 =
  16. 16.HCF of 99 and 88 =
  17. 17.HCF of 16 and 10 =
  18. 18.HCF of 375 and 50 =
  19. 19.HCF of 221 and 323 =
  20. 20.HCF of 238 and 42 =
  21. 21.HCF of 104 and 16 =
  22. 22.HCF of 84 and 204 =
  23. 23.HCF of 195 and 182 =
  24. 24.HCF of 105 and 285 =
  25. 25.HCF of 72 and 480 =
  26. 26.HCF of 80 and 95 =
  27. 27.HCF of 35 and 126 =
  28. 28.HCF of 65 and 143 =
  29. 29.HCF of 330 and 88 =
  30. 30.HCF of 64 and 144 =
  31. 31.HCF of 190 and 180 =
  32. 32.HCF of 44 and 154 =
  33. 33.HCF of 52 and 8 =
  34. 34.HCF of 143 and 52 =
  35. 35.HCF of 96 and 40 =
  36. 36.HCF of 84 and 240 =
  37. 37.HCF of 198 and 180 =
  38. 38.HCF of 35 and 21 =
  39. 39.HCF of 32 and 40 =
  40. 40.HCF of 342 and 126 =

Answer key

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

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