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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 883 · 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 182 and 70 =
  2. 2.HCF of 130 and 190 =
  3. 3.HCF of 192 and 60 =
  4. 4.HCF of 312 and 384 =
  5. 5.HCF of 323 and 380 =
  6. 6.HCF of 374 and 154 =
  7. 7.HCF of 110 and 88 =
  8. 8.HCF of 92 and 207 =
  9. 9.HCF of 70 and 40 =
  10. 10.HCF of 286 and 66 =
  11. 11.HCF of 119 and 49 =
  12. 12.HCF of 170 and 40 =
  13. 13.HCF of 30 and 38 =
  14. 14.HCF of 35 and 14 =
  15. 15.HCF of 143 and 99 =
  16. 16.HCF of 165 and 240 =
  17. 17.HCF of 91 and 21 =
  18. 18.HCF of 85 and 100 =
  19. 19.HCF of 391 and 437 =
  20. 20.HCF of 322 and 345 =
  21. 21.HCF of 77 and 91 =
  22. 22.HCF of 72 and 480 =
  23. 23.HCF of 36 and 54 =
  24. 24.HCF of 38 and 32 =
  25. 25.HCF of 238 and 154 =
  26. 26.HCF of 176 and 66 =
  27. 27.HCF of 91 and 133 =
  28. 28.HCF of 42 and 60 =
  29. 29.HCF of 30 and 108 =
  30. 30.HCF of 15 and 85 =
  31. 31.HCF of 231 and 147 =
  32. 32.HCF of 175 and 400 =
  33. 33.HCF of 160 and 72 =
  34. 34.HCF of 39 and 91 =
  35. 35.HCF of 25 and 40 =
  36. 36.HCF of 98 and 252 =
  37. 37.HCF of 288 and 90 =
  38. 38.HCF of 88 and 209 =
  39. 39.HCF of 60 and 168 =
  40. 40.HCF of 143 and 104 =

Answer key

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

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