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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 309 · 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 28 and 18 =
  2. 2.HCF of 361 and 95 =
  3. 3.HCF of 342 and 324 =
  4. 4.HCF of 400 and 275 =
  5. 5.HCF of 100 and 375 =
  6. 6.HCF of 32 and 48 =
  7. 7.HCF of 114 and 66 =
  8. 8.HCF of 90 and 42 =
  9. 9.HCF of 18 and 38 =
  10. 10.HCF of 144 and 208 =
  11. 11.HCF of 112 and 192 =
  12. 12.HCF of 350 and 75 =
  13. 13.HCF of 44 and 60 =
  14. 14.HCF of 272 and 323 =
  15. 15.HCF of 91 and 130 =
  16. 16.HCF of 76 and 8 =
  17. 17.HCF of 384 and 216 =
  18. 18.HCF of 128 and 144 =
  19. 19.HCF of 69 and 92 =
  20. 20.HCF of 221 and 91 =
  21. 21.HCF of 238 and 289 =
  22. 22.HCF of 92 and 161 =
  23. 23.HCF of 361 and 380 =
  24. 24.HCF of 60 and 78 =
  25. 25.HCF of 138 and 161 =
  26. 26.HCF of 221 and 195 =
  27. 27.HCF of 24 and 114 =
  28. 28.HCF of 39 and 48 =
  29. 29.HCF of 52 and 28 =
  30. 30.HCF of 221 and 52 =
  31. 31.HCF of 216 and 342 =
  32. 32.HCF of 63 and 18 =
  33. 33.HCF of 104 and 16 =
  34. 34.HCF of 84 and 96 =
  35. 35.HCF of 180 and 70 =
  36. 36.HCF of 110 and 264 =
  37. 37.HCF of 437 and 92 =
  38. 38.HCF of 190 and 40 =
  39. 39.HCF of 399 and 147 =
  40. 40.HCF of 160 and 56 =

Answer key

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

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