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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 579 · 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. 1.299² =
  2. 2.479² =
  3. 3.399² =
  4. 4.883² =
  5. 5.618² =
  6. 6.996² =
  7. 7.190² =
  8. 8.5275² =
  9. 9.861² =
  10. 10.9960² =
  11. 11.949² =
  12. 12.3585² =
  13. 13.355² =
  14. 14.850² =
  15. 15.219² =
  16. 16.297² =
  17. 17.3969² =
  18. 18.9077² =
  19. 19.747² =
  20. 20.437² =
  21. 21.146² =
  22. 22.684² =
  23. 23.7982² =
  24. 24.762² =
  25. 25.7664² =
  26. 26.1376² =
  27. 27.3795² =
  28. 28.5623² =
  29. 29.898² =
  30. 30.249² =
  31. 31.985² =
  32. 32.936² =
  33. 33.9198² =
  34. 34.711² =
  35. 35.9346² =
  36. 36.501² =
  37. 37.6183² =
  38. 38.1103² =
  39. 39.364² =
  40. 40.319² =

Answer key

  1. 89401
  2. 229441
  3. 159201
  4. 779689
  5. 381924
  6. 992016
  7. 36100
  8. 27825625
  9. 741321
  10. 99201600
  11. 900601
  12. 12852225
  13. 126025
  14. 722500
  15. 47961
  16. 88209
  17. 15752961
  18. 82391929
  19. 558009
  20. 190969
  21. 21316
  22. 467856
  23. 63712324
  24. 580644
  25. 58736896
  26. 1893376
  27. 14402025
  28. 31618129
  29. 806404
  30. 62001
  31. 970225
  32. 876096
  33. 84603204
  34. 505521
  35. 87347716
  36. 251001
  37. 38229489
  38. 1216609
  39. 132496
  40. 101761

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