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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 654 · 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. 1.760² =
  2. 2.279² =
  3. 3.538² =
  4. 4.891² =
  5. 5.1834² =
  6. 6.1121² =
  7. 7.449² =
  8. 8.2513² =
  9. 9.160² =
  10. 10.496² =
  11. 11.306² =
  12. 12.258² =
  13. 13.6704² =
  14. 14.107² =
  15. 15.2395² =
  16. 16.5151² =
  17. 17.569² =
  18. 18.9638² =
  19. 19.2339² =
  20. 20.391² =
  21. 21.673² =
  22. 22.584² =
  23. 23.9969² =
  24. 24.109² =
  25. 25.671² =
  26. 26.4809² =
  27. 27.261² =
  28. 28.271² =
  29. 29.794² =
  30. 30.701² =
  31. 31.544² =
  32. 32.892² =
  33. 33.626² =
  34. 34.577² =
  35. 35.625² =
  36. 36.603² =
  37. 37.259² =
  38. 38.9433² =
  39. 39.9815² =
  40. 40.603² =

Answer key

  1. 577600
  2. 77841
  3. 289444
  4. 793881
  5. 3363556
  6. 1256641
  7. 201601
  8. 6315169
  9. 25600
  10. 246016
  11. 93636
  12. 66564
  13. 44943616
  14. 11449
  15. 5736025
  16. 26532801
  17. 323761
  18. 92891044
  19. 5470921
  20. 152881
  21. 452929
  22. 341056
  23. 99380961
  24. 11881
  25. 450241
  26. 23126481
  27. 68121
  28. 73441
  29. 630436
  30. 491401
  31. 295936
  32. 795664
  33. 391876
  34. 332929
  35. 390625
  36. 363609
  37. 67081
  38. 88981489
  39. 96334225
  40. 363609

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