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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 713 · 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 300 and 80 =
  2. 2.HCF of 165 and 176 =
  3. 3.HCF of 98 and 140 =
  4. 4.HCF of 44 and 33 =
  5. 5.HCF of 108 and 306 =
  6. 6.HCF of 42 and 63 =
  7. 7.HCF of 48 and 312 =
  8. 8.HCF of 144 and 456 =
  9. 9.HCF of 299 and 322 =
  10. 10.HCF of 12 and 42 =
  11. 11.HCF of 60 and 65 =
  12. 12.HCF of 34 and 51 =
  13. 13.HCF of 90 and 126 =
  14. 14.HCF of 342 and 324 =
  15. 15.HCF of 120 and 340 =
  16. 16.HCF of 323 and 119 =
  17. 17.HCF of 336 and 360 =
  18. 18.HCF of 45 and 162 =
  19. 19.HCF of 102 and 18 =
  20. 20.HCF of 70 and 21 =
  21. 21.HCF of 168 and 288 =
  22. 22.HCF of 456 and 432 =
  23. 23.HCF of 30 and 12 =
  24. 24.HCF of 21 and 24 =
  25. 25.HCF of 256 and 144 =
  26. 26.HCF of 96 and 152 =
  27. 27.HCF of 54 and 42 =
  28. 28.HCF of 40 and 50 =
  29. 29.HCF of 98 and 112 =
  30. 30.HCF of 18 and 99 =
  31. 31.HCF of 153 and 221 =
  32. 32.HCF of 154 and 143 =
  33. 33.HCF of 210 and 399 =
  34. 34.HCF of 60 and 96 =
  35. 35.HCF of 320 and 144 =
  36. 36.HCF of 14 and 32 =
  37. 37.HCF of 4 and 38 =
  38. 38.HCF of 80 and 36 =
  39. 39.HCF of 77 and 28 =
  40. 40.HCF of 120 and 70 =

Answer key

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

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