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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 304 · 40 sums
TalentJR

The trick (Dwandwa Yoga): For abc: columns D(a) | D(ab) | D(abc) | D(bc) | D(c). D(a) = a², D(ab) = 2ab, D(abc) = 2ac + b², D(abcd) = 2ad + 2bc. Combine from the right with carries.

NameDateTime takenScore ___ / 40
  1. 1.6927² =
  2. 2.710² =
  3. 3.3011² =
  4. 4.6933² =
  5. 5.987² =
  6. 6.164² =
  7. 7.685² =
  8. 8.6839² =
  9. 9.833² =
  10. 10.9758² =
  11. 11.743² =
  12. 12.5344² =
  13. 13.8487² =
  14. 14.981² =
  15. 15.9584² =
  16. 16.890² =
  17. 17.833² =
  18. 18.588² =
  19. 19.575² =
  20. 20.925² =
  21. 21.6059² =
  22. 22.8143² =
  23. 23.292² =
  24. 24.3562² =
  25. 25.6397² =
  26. 26.691² =
  27. 27.9936² =
  28. 28.2036² =
  29. 29.4380² =
  30. 30.292² =
  31. 31.987² =
  32. 32.181² =
  33. 33.974² =
  34. 34.7761² =
  35. 35.879² =
  36. 36.898² =
  37. 37.2090² =
  38. 38.981² =
  39. 39.157² =
  40. 40.361² =

Answer key

  1. 47983329
  2. 504100
  3. 9066121
  4. 48066489
  5. 974169
  6. 26896
  7. 469225
  8. 46771921
  9. 693889
  10. 95218564
  11. 552049
  12. 28558336
  13. 72029169
  14. 962361
  15. 91853056
  16. 792100
  17. 693889
  18. 345744
  19. 330625
  20. 855625
  21. 36711481
  22. 66308449
  23. 85264
  24. 12687844
  25. 40921609
  26. 477481
  27. 98724096
  28. 4145296
  29. 19184400
  30. 85264
  31. 974169
  32. 32761
  33. 948676
  34. 60233121
  35. 772641
  36. 806404
  37. 4368100
  38. 962361
  39. 24649
  40. 130321

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