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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 281 · 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 34 and 10 =
  3. 3.HCF of 110 and 396 =
  4. 4.HCF of 187 and 176 =
  5. 5.HCF of 52 and 20 =
  6. 6.HCF of 153 and 272 =
  7. 7.HCF of 119 and 112 =
  8. 8.HCF of 132 and 286 =
  9. 9.HCF of 48 and 224 =
  10. 10.HCF of 40 and 56 =
  11. 11.HCF of 306 and 324 =
  12. 12.HCF of 104 and 247 =
  13. 13.HCF of 418 and 396 =
  14. 14.HCF of 255 and 150 =
  15. 15.HCF of 289 and 119 =
  16. 16.HCF of 48 and 57 =
  17. 17.HCF of 198 and 108 =
  18. 18.HCF of 32 and 34 =
  19. 19.HCF of 42 and 280 =
  20. 20.HCF of 500 and 425 =
  21. 21.HCF of 162 and 153 =
  22. 22.HCF of 57 and 247 =
  23. 23.HCF of 91 and 208 =
  24. 24.HCF of 154 and 440 =
  25. 25.HCF of 90 and 105 =
  26. 26.HCF of 231 and 378 =
  27. 27.HCF of 480 and 456 =
  28. 28.HCF of 143 and 65 =
  29. 29.HCF of 72 and 30 =
  30. 30.HCF of 304 and 57 =
  31. 31.HCF of 104 and 88 =
  32. 32.HCF of 45 and 126 =
  33. 33.HCF of 275 and 500 =
  34. 34.HCF of 32 and 20 =
  35. 35.HCF of 192 and 208 =
  36. 36.HCF of 200 and 60 =
  37. 37.HCF of 408 and 432 =
  38. 38.HCF of 54 and 117 =
  39. 39.HCF of 114 and 12 =
  40. 40.HCF of 154 and 99 =

Answer key

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

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