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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 625 · 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 340 and 260 =
  2. 2.HCF of 36 and 126 =
  3. 3.HCF of 22 and 18 =
  4. 4.HCF of 342 and 95 =
  5. 5.HCF of 18 and 99 =
  6. 6.HCF of 33 and 57 =
  7. 7.HCF of 320 and 220 =
  8. 8.HCF of 77 and 66 =
  9. 9.HCF of 204 and 132 =
  10. 10.HCF of 273 and 42 =
  11. 11.HCF of 42 and 45 =
  12. 12.HCF of 342 and 126 =
  13. 13.HCF of 136 and 64 =
  14. 14.HCF of 108 and 84 =
  15. 15.HCF of 40 and 300 =
  16. 16.HCF of 380 and 280 =
  17. 17.HCF of 95 and 80 =
  18. 18.HCF of 48 and 312 =
  19. 19.HCF of 72 and 336 =
  20. 20.HCF of 112 and 240 =
  21. 21.HCF of 285 and 255 =
  22. 22.HCF of 128 and 136 =
  23. 23.HCF of 374 and 44 =
  24. 24.HCF of 57 and 190 =
  25. 25.HCF of 275 and 300 =
  26. 26.HCF of 238 and 28 =
  27. 27.HCF of 36 and 48 =
  28. 28.HCF of 4 and 6 =
  29. 29.HCF of 325 and 275 =
  30. 30.HCF of 255 and 34 =
  31. 31.HCF of 33 and 187 =
  32. 32.HCF of 340 and 240 =
  33. 33.HCF of 12 and 39 =
  34. 34.HCF of 36 and 38 =
  35. 35.HCF of 209 and 171 =
  36. 36.HCF of 357 and 378 =
  37. 37.HCF of 225 and 125 =
  38. 38.HCF of 16 and 56 =
  39. 39.HCF of 80 and 380 =
  40. 40.HCF of 150 and 130 =

Answer key

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

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