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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 918 · 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 88 and 99 =
  2. 2.HCF of 32 and 20 =
  3. 3.HCF of 198 and 90 =
  4. 4.HCF of 380 and 80 =
  5. 5.HCF of 182 and 28 =
  6. 6.HCF of 247 and 26 =
  7. 7.HCF of 110 and 200 =
  8. 8.HCF of 68 and 323 =
  9. 9.HCF of 28 and 12 =
  10. 10.HCF of 242 and 88 =
  11. 11.HCF of 182 and 143 =
  12. 12.HCF of 312 and 408 =
  13. 13.HCF of 180 and 234 =
  14. 14.HCF of 323 and 304 =
  15. 15.HCF of 160 and 72 =
  16. 16.HCF of 21 and 51 =
  17. 17.HCF of 209 and 187 =
  18. 18.HCF of 24 and 32 =
  19. 19.HCF of 195 and 90 =
  20. 20.HCF of 4 and 34 =
  21. 21.HCF of 51 and 170 =
  22. 22.HCF of 55 and 35 =
  23. 23.HCF of 90 and 80 =
  24. 24.HCF of 209 and 152 =
  25. 25.HCF of 6 and 33 =
  26. 26.HCF of 357 and 210 =
  27. 27.HCF of 65 and 39 =
  28. 28.HCF of 224 and 144 =
  29. 29.HCF of 33 and 42 =
  30. 30.HCF of 289 and 85 =
  31. 31.HCF of 200 and 260 =
  32. 32.HCF of 84 and 315 =
  33. 33.HCF of 70 and 196 =
  34. 34.HCF of 105 and 270 =
  35. 35.HCF of 208 and 91 =
  36. 36.HCF of 66 and 12 =
  37. 37.HCF of 238 and 255 =
  38. 38.HCF of 204 and 120 =
  39. 39.HCF of 51 and 136 =
  40. 40.HCF of 66 and 187 =

Answer key

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

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