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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 595 · 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 425 and 175 =
  2. 2.HCF of 275 and 125 =
  3. 3.HCF of 350 and 275 =
  4. 4.HCF of 60 and 33 =
  5. 5.HCF of 171 and 99 =
  6. 6.HCF of 50 and 35 =
  7. 7.HCF of 322 and 437 =
  8. 8.HCF of 90 and 70 =
  9. 9.HCF of 132 and 187 =
  10. 10.HCF of 114 and 78 =
  11. 11.HCF of 171 and 144 =
  12. 12.HCF of 247 and 143 =
  13. 13.HCF of 187 and 143 =
  14. 14.HCF of 28 and 30 =
  15. 15.HCF of 33 and 39 =
  16. 16.HCF of 180 and 126 =
  17. 17.HCF of 45 and 80 =
  18. 18.HCF of 56 and 104 =
  19. 19.HCF of 228 and 323 =
  20. 20.HCF of 198 and 418 =
  21. 21.HCF of 39 and 18 =
  22. 22.HCF of 162 and 288 =
  23. 23.HCF of 256 and 80 =
  24. 24.HCF of 165 and 180 =
  25. 25.HCF of 198 and 90 =
  26. 26.HCF of 408 and 480 =
  27. 27.HCF of 52 and 221 =
  28. 28.HCF of 96 and 456 =
  29. 29.HCF of 437 and 138 =
  30. 30.HCF of 55 and 154 =
  31. 31.HCF of 112 and 63 =
  32. 32.HCF of 12 and 16 =
  33. 33.HCF of 288 and 168 =
  34. 34.HCF of 42 and 147 =
  35. 35.HCF of 342 and 133 =
  36. 36.HCF of 323 and 380 =
  37. 37.HCF of 30 and 108 =
  38. 38.HCF of 270 and 105 =
  39. 39.HCF of 30 and 48 =
  40. 40.HCF of 198 and 144 =

Answer key

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

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