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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 551 · 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 121 and 187 =
  2. 2.HCF of 231 and 294 =
  3. 3.HCF of 60 and 44 =
  4. 4.HCF of 170 and 130 =
  5. 5.HCF of 6 and 40 =
  6. 6.HCF of 114 and 66 =
  7. 7.HCF of 285 and 270 =
  8. 8.HCF of 18 and 57 =
  9. 9.HCF of 425 and 500 =
  10. 10.HCF of 18 and 66 =
  11. 11.HCF of 120 and 380 =
  12. 12.HCF of 400 and 125 =
  13. 13.HCF of 14 and 10 =
  14. 14.HCF of 340 and 60 =
  15. 15.HCF of 425 and 375 =
  16. 16.HCF of 198 and 286 =
  17. 17.HCF of 78 and 36 =
  18. 18.HCF of 56 and 20 =
  19. 19.HCF of 175 and 325 =
  20. 20.HCF of 126 and 147 =
  21. 21.HCF of 115 and 92 =
  22. 22.HCF of 162 and 171 =
  23. 23.HCF of 112 and 288 =
  24. 24.HCF of 176 and 143 =
  25. 25.HCF of 306 and 221 =
  26. 26.HCF of 56 and 72 =
  27. 27.HCF of 100 and 120 =
  28. 28.HCF of 154 and 98 =
  29. 29.HCF of 117 and 143 =
  30. 30.HCF of 208 and 80 =
  31. 31.HCF of 154 and 110 =
  32. 32.HCF of 34 and 10 =
  33. 33.HCF of 36 and 40 =
  34. 34.HCF of 26 and 16 =
  35. 35.HCF of 121 and 143 =
  36. 36.HCF of 57 and 361 =
  37. 37.HCF of 104 and 48 =
  38. 38.HCF of 8 and 68 =
  39. 39.HCF of 322 and 253 =
  40. 40.HCF of 368 and 69 =

Answer key

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

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