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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 256 · 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. 1.687² =
  2. 2.3166² =
  3. 3.1408² =
  4. 4.291² =
  5. 5.215² =
  6. 6.321² =
  7. 7.8750² =
  8. 8.3737² =
  9. 9.938² =
  10. 10.3796² =
  11. 11.655² =
  12. 12.196² =
  13. 13.162² =
  14. 14.668² =
  15. 15.277² =
  16. 16.185² =
  17. 17.2167² =
  18. 18.3740² =
  19. 19.256² =
  20. 20.270² =
  21. 21.573² =
  22. 22.3170² =
  23. 23.161² =
  24. 24.835² =
  25. 25.7138² =
  26. 26.5180² =
  27. 27.626² =
  28. 28.710² =
  29. 29.844² =
  30. 30.377² =
  31. 31.552² =
  32. 32.758² =
  33. 33.654² =
  34. 34.297² =
  35. 35.930² =
  36. 36.799² =
  37. 37.836² =
  38. 38.677² =
  39. 39.982² =
  40. 40.6643² =

Answer key

  1. 471969
  2. 10023556
  3. 1982464
  4. 84681
  5. 46225
  6. 103041
  7. 76562500
  8. 13965169
  9. 879844
  10. 14409616
  11. 429025
  12. 38416
  13. 26244
  14. 446224
  15. 76729
  16. 34225
  17. 4695889
  18. 13987600
  19. 65536
  20. 72900
  21. 328329
  22. 10048900
  23. 25921
  24. 697225
  25. 50951044
  26. 26832400
  27. 391876
  28. 504100
  29. 712336
  30. 142129
  31. 304704
  32. 574564
  33. 427716
  34. 88209
  35. 864900
  36. 638401
  37. 698896
  38. 458329
  39. 964324
  40. 44129449

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