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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 726 · 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. 1.282² =
  2. 2.970² =
  3. 3.929² =
  4. 4.8754² =
  5. 5.5353² =
  6. 6.589² =
  7. 7.430² =
  8. 8.145² =
  9. 9.924² =
  10. 10.759² =
  11. 11.608² =
  12. 12.3182² =
  13. 13.418² =
  14. 14.7348² =
  15. 15.844² =
  16. 16.330² =
  17. 17.2031² =
  18. 18.3775² =
  19. 19.729² =
  20. 20.4372² =
  21. 21.317² =
  22. 22.626² =
  23. 23.431² =
  24. 24.4296² =
  25. 25.287² =
  26. 26.8457² =
  27. 27.716² =
  28. 28.2969² =
  29. 29.788² =
  30. 30.7272² =
  31. 31.685² =
  32. 32.655² =
  33. 33.890² =
  34. 34.836² =
  35. 35.338² =
  36. 36.203² =
  37. 37.826² =
  38. 38.756² =
  39. 39.2567² =
  40. 40.679² =

Answer key

  1. 79524
  2. 940900
  3. 863041
  4. 76632516
  5. 28654609
  6. 346921
  7. 184900
  8. 21025
  9. 853776
  10. 576081
  11. 369664
  12. 10125124
  13. 174724
  14. 53993104
  15. 712336
  16. 108900
  17. 4124961
  18. 14250625
  19. 531441
  20. 19114384
  21. 100489
  22. 391876
  23. 185761
  24. 18455616
  25. 82369
  26. 71520849
  27. 512656
  28. 8814961
  29. 620944
  30. 52881984
  31. 469225
  32. 429025
  33. 792100
  34. 698896
  35. 114244
  36. 41209
  37. 682276
  38. 571536
  39. 6589489
  40. 461041

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