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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 77 · 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. 1.938² =
  2. 2.1450² =
  3. 3.308² =
  4. 4.4441² =
  5. 5.637² =
  6. 6.416² =
  7. 7.928² =
  8. 8.189² =
  9. 9.655² =
  10. 10.456² =
  11. 11.822² =
  12. 12.844² =
  13. 13.678² =
  14. 14.402² =
  15. 15.541² =
  16. 16.322² =
  17. 17.138² =
  18. 18.298² =
  19. 19.155² =
  20. 20.551² =
  21. 21.239² =
  22. 22.8094² =
  23. 23.912² =
  24. 24.905² =
  25. 25.920² =
  26. 26.910² =
  27. 27.633² =
  28. 28.4509² =
  29. 29.409² =
  30. 30.634² =
  31. 31.393² =
  32. 32.9735² =
  33. 33.9551² =
  34. 34.261² =
  35. 35.967² =
  36. 36.1357² =
  37. 37.363² =
  38. 38.559² =
  39. 39.875² =
  40. 40.344² =

Answer key

  1. 879844
  2. 2102500
  3. 94864
  4. 19722481
  5. 405769
  6. 173056
  7. 861184
  8. 35721
  9. 429025
  10. 207936
  11. 675684
  12. 712336
  13. 459684
  14. 161604
  15. 292681
  16. 103684
  17. 19044
  18. 88804
  19. 24025
  20. 303601
  21. 57121
  22. 65512836
  23. 831744
  24. 819025
  25. 846400
  26. 828100
  27. 400689
  28. 20331081
  29. 167281
  30. 401956
  31. 154449
  32. 94770225
  33. 91221601
  34. 68121
  35. 935089
  36. 1841449
  37. 131769
  38. 312481
  39. 765625
  40. 118336

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