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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 334 · 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. 1.457² =
  2. 2.630² =
  3. 3.683² =
  4. 4.297² =
  5. 5.5908² =
  6. 6.4254² =
  7. 7.930² =
  8. 8.685² =
  9. 9.420² =
  10. 10.2380² =
  11. 11.453² =
  12. 12.3501² =
  13. 13.559² =
  14. 14.5688² =
  15. 15.9659² =
  16. 16.374² =
  17. 17.7279² =
  18. 18.262² =
  19. 19.655² =
  20. 20.898² =
  21. 21.3431² =
  22. 22.468² =
  23. 23.2704² =
  24. 24.467² =
  25. 25.154² =
  26. 26.7829² =
  27. 27.345² =
  28. 28.618² =
  29. 29.184² =
  30. 30.305² =
  31. 31.621² =
  32. 32.8343² =
  33. 33.159² =
  34. 34.475² =
  35. 35.748² =
  36. 36.790² =
  37. 37.847² =
  38. 38.6346² =
  39. 39.588² =
  40. 40.877² =

Answer key

  1. 208849
  2. 396900
  3. 466489
  4. 88209
  5. 34904464
  6. 18096516
  7. 864900
  8. 469225
  9. 176400
  10. 5664400
  11. 205209
  12. 12257001
  13. 312481
  14. 32353344
  15. 93296281
  16. 139876
  17. 52983841
  18. 68644
  19. 429025
  20. 806404
  21. 11771761
  22. 219024
  23. 7311616
  24. 218089
  25. 23716
  26. 61293241
  27. 119025
  28. 381924
  29. 33856
  30. 93025
  31. 385641
  32. 69605649
  33. 25281
  34. 225625
  35. 559504
  36. 624100
  37. 717409
  38. 40271716
  39. 345744
  40. 769129

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