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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 501 · 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. 1.992² =
  2. 2.697² =
  3. 3.140² =
  4. 4.520² =
  5. 5.1262² =
  6. 6.265² =
  7. 7.357² =
  8. 8.102² =
  9. 9.468² =
  10. 10.5392² =
  11. 11.421² =
  12. 12.203² =
  13. 13.323² =
  14. 14.122² =
  15. 15.646² =
  16. 16.373² =
  17. 17.8038² =
  18. 18.237² =
  19. 19.442² =
  20. 20.6279² =
  21. 21.907² =
  22. 22.367² =
  23. 23.1168² =
  24. 24.478² =
  25. 25.484² =
  26. 26.3634² =
  27. 27.873² =
  28. 28.213² =
  29. 29.8314² =
  30. 30.380² =
  31. 31.479² =
  32. 32.485² =
  33. 33.181² =
  34. 34.4518² =
  35. 35.8440² =
  36. 36.513² =
  37. 37.247² =
  38. 38.373² =
  39. 39.475² =
  40. 40.243² =

Answer key

  1. 984064
  2. 485809
  3. 19600
  4. 270400
  5. 1592644
  6. 70225
  7. 127449
  8. 10404
  9. 219024
  10. 29073664
  11. 177241
  12. 41209
  13. 104329
  14. 14884
  15. 417316
  16. 139129
  17. 64609444
  18. 56169
  19. 195364
  20. 39425841
  21. 822649
  22. 134689
  23. 1364224
  24. 228484
  25. 234256
  26. 13205956
  27. 762129
  28. 45369
  29. 69122596
  30. 144400
  31. 229441
  32. 235225
  33. 32761
  34. 20412324
  35. 71233600
  36. 263169
  37. 61009
  38. 139129
  39. 225625
  40. 59049

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