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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 194 · 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. 1.219² =
  2. 2.719² =
  3. 3.393² =
  4. 4.2793² =
  5. 5.104² =
  6. 6.350² =
  7. 7.2615² =
  8. 8.2375² =
  9. 9.772² =
  10. 10.3824² =
  11. 11.8078² =
  12. 12.310² =
  13. 13.115² =
  14. 14.371² =
  15. 15.2080² =
  16. 16.448² =
  17. 17.205² =
  18. 18.875² =
  19. 19.2784² =
  20. 20.396² =
  21. 21.820² =
  22. 22.348² =
  23. 23.490² =
  24. 24.5335² =
  25. 25.9407² =
  26. 26.530² =
  27. 27.222² =
  28. 28.4912² =
  29. 29.2659² =
  30. 30.6736² =
  31. 31.851² =
  32. 32.6889² =
  33. 33.878² =
  34. 34.470² =
  35. 35.2129² =
  36. 36.958² =
  37. 37.113² =
  38. 38.9586² =
  39. 39.367² =
  40. 40.9720² =

Answer key

  1. 47961
  2. 516961
  3. 154449
  4. 7800849
  5. 10816
  6. 122500
  7. 6838225
  8. 5640625
  9. 595984
  10. 14622976
  11. 65254084
  12. 96100
  13. 13225
  14. 137641
  15. 4326400
  16. 200704
  17. 42025
  18. 765625
  19. 7750656
  20. 156816
  21. 672400
  22. 121104
  23. 240100
  24. 28462225
  25. 88491649
  26. 280900
  27. 49284
  28. 24127744
  29. 7070281
  30. 45373696
  31. 724201
  32. 47458321
  33. 770884
  34. 220900
  35. 4532641
  36. 917764
  37. 12769
  38. 91891396
  39. 134689
  40. 94478400

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