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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 690 · 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 80 and 176 =
  2. 2.HCF of 168 and 96 =
  3. 3.HCF of 26 and 28 =
  4. 4.HCF of 95 and 57 =
  5. 5.HCF of 154 and 242 =
  6. 6.HCF of 143 and 221 =
  7. 7.HCF of 32 and 240 =
  8. 8.HCF of 171 and 266 =
  9. 9.HCF of 192 and 168 =
  10. 10.HCF of 68 and 85 =
  11. 11.HCF of 8 and 44 =
  12. 12.HCF of 120 and 288 =
  13. 13.HCF of 22 and 99 =
  14. 14.HCF of 153 and 72 =
  15. 15.HCF of 8 and 68 =
  16. 16.HCF of 126 and 147 =
  17. 17.HCF of 60 and 57 =
  18. 18.HCF of 22 and 36 =
  19. 19.HCF of 357 and 378 =
  20. 20.HCF of 56 and 63 =
  21. 21.HCF of 238 and 42 =
  22. 22.HCF of 98 and 77 =
  23. 23.HCF of 126 and 36 =
  24. 24.HCF of 45 and 6 =
  25. 25.HCF of 133 and 119 =
  26. 26.HCF of 168 and 432 =
  27. 27.HCF of 77 and 63 =
  28. 28.HCF of 112 and 272 =
  29. 29.HCF of 110 and 70 =
  30. 30.HCF of 46 and 299 =
  31. 31.HCF of 399 and 42 =
  32. 32.HCF of 133 and 35 =
  33. 33.HCF of 22 and 6 =
  34. 34.HCF of 210 and 56 =
  35. 35.HCF of 120 and 50 =
  36. 36.HCF of 75 and 175 =
  37. 37.HCF of 299 and 460 =
  38. 38.HCF of 187 and 170 =
  39. 39.HCF of 120 and 432 =
  40. 40.HCF of 299 and 276 =

Answer key

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

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