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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 50 · 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. 1.245² =
  2. 2.322² =
  3. 3.105² =
  4. 4.641² =
  5. 5.284² =
  6. 6.796² =
  7. 7.8752² =
  8. 8.4553² =
  9. 9.7354² =
  10. 10.423² =
  11. 11.4216² =
  12. 12.961² =
  13. 13.952² =
  14. 14.657² =
  15. 15.2409² =
  16. 16.805² =
  17. 17.713² =
  18. 18.869² =
  19. 19.342² =
  20. 20.662² =
  21. 21.734² =
  22. 22.1879² =
  23. 23.557² =
  24. 24.677² =
  25. 25.1590² =
  26. 26.2249² =
  27. 27.823² =
  28. 28.442² =
  29. 29.280² =
  30. 30.569² =
  31. 31.5174² =
  32. 32.629² =
  33. 33.987² =
  34. 34.7328² =
  35. 35.492² =
  36. 36.487² =
  37. 37.470² =
  38. 38.131² =
  39. 39.538² =
  40. 40.2632² =

Answer key

  1. 60025
  2. 103684
  3. 11025
  4. 410881
  5. 80656
  6. 633616
  7. 76597504
  8. 20729809
  9. 54081316
  10. 178929
  11. 17774656
  12. 923521
  13. 906304
  14. 431649
  15. 5803281
  16. 648025
  17. 508369
  18. 755161
  19. 116964
  20. 438244
  21. 538756
  22. 3530641
  23. 310249
  24. 458329
  25. 2528100
  26. 5058001
  27. 677329
  28. 195364
  29. 78400
  30. 323761
  31. 26770276
  32. 395641
  33. 974169
  34. 53699584
  35. 242064
  36. 237169
  37. 220900
  38. 17161
  39. 289444
  40. 6927424

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