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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 131 · 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 242 and 220 =
  2. 2.HCF of 340 and 220 =
  3. 3.HCF of 50 and 40 =
  4. 4.HCF of 289 and 51 =
  5. 5.HCF of 368 and 345 =
  6. 6.HCF of 88 and 56 =
  7. 7.HCF of 330 and 352 =
  8. 8.HCF of 36 and 60 =
  9. 9.HCF of 156 and 247 =
  10. 10.HCF of 51 and 15 =
  11. 11.HCF of 286 and 66 =
  12. 12.HCF of 44 and 24 =
  13. 13.HCF of 190 and 150 =
  14. 14.HCF of 340 and 80 =
  15. 15.HCF of 200 and 425 =
  16. 16.HCF of 135 and 165 =
  17. 17.HCF of 152 and 160 =
  18. 18.HCF of 100 and 30 =
  19. 19.HCF of 231 and 63 =
  20. 20.HCF of 40 and 24 =
  21. 21.HCF of 266 and 361 =
  22. 22.HCF of 42 and 154 =
  23. 23.HCF of 63 and 14 =
  24. 24.HCF of 273 and 84 =
  25. 25.HCF of 330 and 352 =
  26. 26.HCF of 190 and 209 =
  27. 27.HCF of 110 and 100 =
  28. 28.HCF of 27 and 72 =
  29. 29.HCF of 75 and 10 =
  30. 30.HCF of 98 and 28 =
  31. 31.HCF of 288 and 198 =
  32. 32.HCF of 153 and 18 =
  33. 33.HCF of 209 and 88 =
  34. 34.HCF of 64 and 208 =
  35. 35.HCF of 256 and 272 =
  36. 36.HCF of 286 and 352 =
  37. 37.HCF of 15 and 95 =
  38. 38.HCF of 475 and 400 =
  39. 39.HCF of 299 and 230 =
  40. 40.HCF of 70 and 65 =

Answer key

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

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