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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 694 · 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. 1.644² =
  2. 2.558² =
  3. 3.728² =
  4. 4.138² =
  5. 5.944² =
  6. 6.355² =
  7. 7.555² =
  8. 8.480² =
  9. 9.323² =
  10. 10.158² =
  11. 11.624² =
  12. 12.409² =
  13. 13.467² =
  14. 14.950² =
  15. 15.188² =
  16. 16.278² =
  17. 17.728² =
  18. 18.5064² =
  19. 19.675² =
  20. 20.823² =
  21. 21.993² =
  22. 22.3979² =
  23. 23.694² =
  24. 24.365² =
  25. 25.1885² =
  26. 26.2297² =
  27. 27.2004² =
  28. 28.946² =
  29. 29.6910² =
  30. 30.130² =
  31. 31.2013² =
  32. 32.700² =
  33. 33.265² =
  34. 34.4905² =
  35. 35.3434² =
  36. 36.939² =
  37. 37.572² =
  38. 38.2389² =
  39. 39.738² =
  40. 40.563² =

Answer key

  1. 414736
  2. 311364
  3. 529984
  4. 19044
  5. 891136
  6. 126025
  7. 308025
  8. 230400
  9. 104329
  10. 24964
  11. 389376
  12. 167281
  13. 218089
  14. 902500
  15. 35344
  16. 77284
  17. 529984
  18. 25644096
  19. 455625
  20. 677329
  21. 986049
  22. 15832441
  23. 481636
  24. 133225
  25. 3553225
  26. 5276209
  27. 4016016
  28. 894916
  29. 47748100
  30. 16900
  31. 4052169
  32. 490000
  33. 70225
  34. 24059025
  35. 11792356
  36. 881721
  37. 327184
  38. 5707321
  39. 544644
  40. 316969

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