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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 299 · 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 77 and 49 =
  2. 2.HCF of 165 and 30 =
  3. 3.HCF of 180 and 75 =
  4. 4.HCF of 168 and 70 =
  5. 5.HCF of 153 and 81 =
  6. 6.HCF of 450 and 275 =
  7. 7.HCF of 175 and 50 =
  8. 8.HCF of 168 and 120 =
  9. 9.HCF of 255 and 270 =
  10. 10.HCF of 171 and 36 =
  11. 11.HCF of 36 and 192 =
  12. 12.HCF of 165 and 270 =
  13. 13.HCF of 26 and 195 =
  14. 14.HCF of 60 and 35 =
  15. 15.HCF of 160 and 176 =
  16. 16.HCF of 126 and 133 =
  17. 17.HCF of 399 and 168 =
  18. 18.HCF of 90 and 100 =
  19. 19.HCF of 147 and 399 =
  20. 20.HCF of 95 and 25 =
  21. 21.HCF of 42 and 48 =
  22. 22.HCF of 247 and 195 =
  23. 23.HCF of 252 and 399 =
  24. 24.HCF of 357 and 126 =
  25. 25.HCF of 221 and 26 =
  26. 26.HCF of 99 and 154 =
  27. 27.HCF of 418 and 264 =
  28. 28.HCF of 14 and 32 =
  29. 29.HCF of 300 and 105 =
  30. 30.HCF of 45 and 165 =
  31. 31.HCF of 36 and 162 =
  32. 32.HCF of 342 and 234 =
  33. 33.HCF of 238 and 51 =
  34. 34.HCF of 104 and 32 =
  35. 35.HCF of 144 and 320 =
  36. 36.HCF of 160 and 300 =
  37. 37.HCF of 35 and 14 =
  38. 38.HCF of 400 and 140 =
  39. 39.HCF of 15 and 95 =
  40. 40.HCF of 76 and 80 =

Answer key

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

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