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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 608 · 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 220 and 121 =
  2. 2.HCF of 195 and 300 =
  3. 3.HCF of 115 and 253 =
  4. 4.HCF of 221 and 39 =
  5. 5.HCF of 220 and 80 =
  6. 6.HCF of 28 and 48 =
  7. 7.HCF of 425 and 150 =
  8. 8.HCF of 76 and 40 =
  9. 9.HCF of 72 and 44 =
  10. 10.HCF of 176 and 304 =
  11. 11.HCF of 238 and 112 =
  12. 12.HCF of 288 and 54 =
  13. 13.HCF of 91 and 70 =
  14. 14.HCF of 418 and 242 =
  15. 15.HCF of 100 and 70 =
  16. 16.HCF of 15 and 40 =
  17. 17.HCF of 192 and 108 =
  18. 18.HCF of 76 and 56 =
  19. 19.HCF of 88 and 152 =
  20. 20.HCF of 64 and 60 =
  21. 21.HCF of 192 and 204 =
  22. 22.HCF of 264 and 240 =
  23. 23.HCF of 32 and 18 =
  24. 24.HCF of 352 and 154 =
  25. 25.HCF of 115 and 368 =
  26. 26.HCF of 42 and 231 =
  27. 27.HCF of 425 and 375 =
  28. 28.HCF of 15 and 18 =
  29. 29.HCF of 126 and 306 =
  30. 30.HCF of 171 and 180 =
  31. 31.HCF of 25 and 35 =
  32. 32.HCF of 70 and 130 =
  33. 33.HCF of 198 and 187 =
  34. 34.HCF of 60 and 54 =
  35. 35.HCF of 275 and 75 =
  36. 36.HCF of 150 and 45 =
  37. 37.HCF of 45 and 195 =
  38. 38.HCF of 70 and 63 =
  39. 39.HCF of 168 and 399 =
  40. 40.HCF of 32 and 14 =

Answer key

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

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