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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 117 · 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. 1.7468² =
  2. 2.158² =
  3. 3.402² =
  4. 4.635² =
  5. 5.611² =
  6. 6.138² =
  7. 7.326² =
  8. 8.185² =
  9. 9.440² =
  10. 10.328² =
  11. 11.280² =
  12. 12.175² =
  13. 13.7179² =
  14. 14.977² =
  15. 15.3149² =
  16. 16.8185² =
  17. 17.612² =
  18. 18.1496² =
  19. 19.6478² =
  20. 20.6510² =
  21. 21.674² =
  22. 22.802² =
  23. 23.8170² =
  24. 24.503² =
  25. 25.174² =
  26. 26.768² =
  27. 27.697² =
  28. 28.202² =
  29. 29.639² =
  30. 30.179² =
  31. 31.1792² =
  32. 32.617² =
  33. 33.369² =
  34. 34.788² =
  35. 35.683² =
  36. 36.537² =
  37. 37.769² =
  38. 38.193² =
  39. 39.722² =
  40. 40.3878² =

Answer key

  1. 55771024
  2. 24964
  3. 161604
  4. 403225
  5. 373321
  6. 19044
  7. 106276
  8. 34225
  9. 193600
  10. 107584
  11. 78400
  12. 30625
  13. 51538041
  14. 954529
  15. 9916201
  16. 66994225
  17. 374544
  18. 2238016
  19. 41964484
  20. 42380100
  21. 454276
  22. 643204
  23. 66748900
  24. 253009
  25. 30276
  26. 589824
  27. 485809
  28. 40804
  29. 408321
  30. 32041
  31. 3211264
  32. 380689
  33. 136161
  34. 620944
  35. 466489
  36. 288369
  37. 591361
  38. 37249
  39. 521284
  40. 15038884

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