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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 109 · 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. 1.180² =
  2. 2.939² =
  3. 3.918² =
  4. 4.7489² =
  5. 5.236² =
  6. 6.623² =
  7. 7.3317² =
  8. 8.8107² =
  9. 9.5299² =
  10. 10.765² =
  11. 11.810² =
  12. 12.740² =
  13. 13.209² =
  14. 14.798² =
  15. 15.799² =
  16. 16.771² =
  17. 17.144² =
  18. 18.565² =
  19. 19.893² =
  20. 20.716² =
  21. 21.515² =
  22. 22.1640² =
  23. 23.712² =
  24. 24.5416² =
  25. 25.969² =
  26. 26.310² =
  27. 27.140² =
  28. 28.188² =
  29. 29.620² =
  30. 30.1608² =
  31. 31.574² =
  32. 32.6288² =
  33. 33.5328² =
  34. 34.696² =
  35. 35.4658² =
  36. 36.282² =
  37. 37.633² =
  38. 38.755² =
  39. 39.611² =
  40. 40.352² =

Answer key

  1. 32400
  2. 881721
  3. 842724
  4. 56085121
  5. 55696
  6. 388129
  7. 11002489
  8. 65723449
  9. 28079401
  10. 585225
  11. 656100
  12. 547600
  13. 43681
  14. 636804
  15. 638401
  16. 594441
  17. 20736
  18. 319225
  19. 797449
  20. 512656
  21. 265225
  22. 2689600
  23. 506944
  24. 29333056
  25. 938961
  26. 96100
  27. 19600
  28. 35344
  29. 384400
  30. 2585664
  31. 329476
  32. 39538944
  33. 28387584
  34. 484416
  35. 21696964
  36. 79524
  37. 400689
  38. 570025
  39. 373321
  40. 123904

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