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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 169 · 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. 1.920² =
  2. 2.941² =
  3. 3.270² =
  4. 4.9733² =
  5. 5.649² =
  6. 6.771² =
  7. 7.940² =
  8. 8.433² =
  9. 9.958² =
  10. 10.338² =
  11. 11.1393² =
  12. 12.565² =
  13. 13.9641² =
  14. 14.469² =
  15. 15.438² =
  16. 16.721² =
  17. 17.784² =
  18. 18.889² =
  19. 19.110² =
  20. 20.9643² =
  21. 21.881² =
  22. 22.570² =
  23. 23.4850² =
  24. 24.865² =
  25. 25.599² =
  26. 26.109² =
  27. 27.443² =
  28. 28.7517² =
  29. 29.683² =
  30. 30.843² =
  31. 31.881² =
  32. 32.588² =
  33. 33.3812² =
  34. 34.950² =
  35. 35.152² =
  36. 36.691² =
  37. 37.2861² =
  38. 38.6295² =
  39. 39.1285² =
  40. 40.514² =

Answer key

  1. 846400
  2. 885481
  3. 72900
  4. 94731289
  5. 421201
  6. 594441
  7. 883600
  8. 187489
  9. 917764
  10. 114244
  11. 1940449
  12. 319225
  13. 92948881
  14. 219961
  15. 191844
  16. 519841
  17. 614656
  18. 790321
  19. 12100
  20. 92987449
  21. 776161
  22. 324900
  23. 23522500
  24. 748225
  25. 358801
  26. 11881
  27. 196249
  28. 56505289
  29. 466489
  30. 710649
  31. 776161
  32. 345744
  33. 14531344
  34. 902500
  35. 23104
  36. 477481
  37. 8185321
  38. 39627025
  39. 1651225
  40. 264196

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