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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 981 · 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 425 =
  2. 2.HCF of 76 and 36 =
  3. 3.HCF of 91 and 49 =
  4. 4.HCF of 136 and 16 =
  5. 5.HCF of 95 and 35 =
  6. 6.HCF of 170 and 140 =
  7. 7.HCF of 130 and 190 =
  8. 8.HCF of 56 and 238 =
  9. 9.HCF of 32 and 72 =
  10. 10.HCF of 189 and 399 =
  11. 11.HCF of 126 and 49 =
  12. 12.HCF of 30 and 78 =
  13. 13.HCF of 119 and 91 =
  14. 14.HCF of 144 and 264 =
  15. 15.HCF of 144 and 32 =
  16. 16.HCF of 115 and 437 =
  17. 17.HCF of 64 and 80 =
  18. 18.HCF of 220 and 400 =
  19. 19.HCF of 360 and 384 =
  20. 20.HCF of 14 and 119 =
  21. 21.HCF of 288 and 342 =
  22. 22.HCF of 85 and 306 =
  23. 23.HCF of 108 and 117 =
  24. 24.HCF of 182 and 140 =
  25. 25.HCF of 96 and 104 =
  26. 26.HCF of 165 and 120 =
  27. 27.HCF of 480 and 216 =
  28. 28.HCF of 119 and 51 =
  29. 29.HCF of 33 and 88 =
  30. 30.HCF of 40 and 136 =
  31. 31.HCF of 18 and 8 =
  32. 32.HCF of 90 and 24 =
  33. 33.HCF of 54 and 12 =
  34. 34.HCF of 85 and 187 =
  35. 35.HCF of 195 and 91 =
  36. 36.HCF of 112 and 210 =
  37. 37.HCF of 361 and 114 =
  38. 38.HCF of 49 and 84 =
  39. 39.HCF of 209 and 77 =
  40. 40.HCF of 32 and 72 =

Answer key

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

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