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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 255 · 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. 1.810² =
  2. 2.1929² =
  3. 3.759² =
  4. 4.3639² =
  5. 5.649² =
  6. 6.544² =
  7. 7.813² =
  8. 8.632² =
  9. 9.166² =
  10. 10.3295² =
  11. 11.452² =
  12. 12.124² =
  13. 13.735² =
  14. 14.706² =
  15. 15.487² =
  16. 16.110² =
  17. 17.511² =
  18. 18.377² =
  19. 19.439² =
  20. 20.107² =
  21. 21.348² =
  22. 22.151² =
  23. 23.8035² =
  24. 24.479² =
  25. 25.359² =
  26. 26.6276² =
  27. 27.216² =
  28. 28.588² =
  29. 29.628² =
  30. 30.240² =
  31. 31.375² =
  32. 32.841² =
  33. 33.623² =
  34. 34.264² =
  35. 35.650² =
  36. 36.488² =
  37. 37.8569² =
  38. 38.756² =
  39. 39.665² =
  40. 40.596² =

Answer key

  1. 656100
  2. 3721041
  3. 576081
  4. 13242321
  5. 421201
  6. 295936
  7. 660969
  8. 399424
  9. 27556
  10. 10857025
  11. 204304
  12. 15376
  13. 540225
  14. 498436
  15. 237169
  16. 12100
  17. 261121
  18. 142129
  19. 192721
  20. 11449
  21. 121104
  22. 22801
  23. 64561225
  24. 229441
  25. 128881
  26. 39388176
  27. 46656
  28. 345744
  29. 394384
  30. 57600
  31. 140625
  32. 707281
  33. 388129
  34. 69696
  35. 422500
  36. 238144
  37. 73427761
  38. 571536
  39. 442225
  40. 355216

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