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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 488 · 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. 1.3910² =
  2. 2.635² =
  3. 3.8020² =
  4. 4.5216² =
  5. 5.362² =
  6. 6.525² =
  7. 7.488² =
  8. 8.151² =
  9. 9.290² =
  10. 10.874² =
  11. 11.1181² =
  12. 12.632² =
  13. 13.885² =
  14. 14.2907² =
  15. 15.145² =
  16. 16.963² =
  17. 17.8438² =
  18. 18.567² =
  19. 19.869² =
  20. 20.248² =
  21. 21.957² =
  22. 22.118² =
  23. 23.891² =
  24. 24.537² =
  25. 25.398² =
  26. 26.688² =
  27. 27.2742² =
  28. 28.5234² =
  29. 29.1952² =
  30. 30.118² =
  31. 31.8963² =
  32. 32.160² =
  33. 33.150² =
  34. 34.8059² =
  35. 35.580² =
  36. 36.539² =
  37. 37.7875² =
  38. 38.694² =
  39. 39.707² =
  40. 40.896² =

Answer key

  1. 15288100
  2. 403225
  3. 64320400
  4. 27206656
  5. 131044
  6. 275625
  7. 238144
  8. 22801
  9. 84100
  10. 763876
  11. 1394761
  12. 399424
  13. 783225
  14. 8450649
  15. 21025
  16. 927369
  17. 71199844
  18. 321489
  19. 755161
  20. 61504
  21. 915849
  22. 13924
  23. 793881
  24. 288369
  25. 158404
  26. 473344
  27. 7518564
  28. 27394756
  29. 3810304
  30. 13924
  31. 80335369
  32. 25600
  33. 22500
  34. 64947481
  35. 336400
  36. 290521
  37. 62015625
  38. 481636
  39. 499849
  40. 802816

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