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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 778 · 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. 1.5898² =
  2. 2.546² =
  3. 3.641² =
  4. 4.766² =
  5. 5.670² =
  6. 6.2626² =
  7. 7.683² =
  8. 8.5972² =
  9. 9.576² =
  10. 10.828² =
  11. 11.2250² =
  12. 12.4803² =
  13. 13.233² =
  14. 14.661² =
  15. 15.793² =
  16. 16.905² =
  17. 17.424² =
  18. 18.273² =
  19. 19.945² =
  20. 20.613² =
  21. 21.335² =
  22. 22.911² =
  23. 23.397² =
  24. 24.333² =
  25. 25.388² =
  26. 26.151² =
  27. 27.7664² =
  28. 28.870² =
  29. 29.721² =
  30. 30.5588² =
  31. 31.461² =
  32. 32.4755² =
  33. 33.469² =
  34. 34.1851² =
  35. 35.672² =
  36. 36.272² =
  37. 37.553² =
  38. 38.8399² =
  39. 39.275² =
  40. 40.390² =

Answer key

  1. 34786404
  2. 298116
  3. 410881
  4. 586756
  5. 448900
  6. 6895876
  7. 466489
  8. 35664784
  9. 331776
  10. 685584
  11. 5062500
  12. 23068809
  13. 54289
  14. 436921
  15. 628849
  16. 819025
  17. 179776
  18. 74529
  19. 893025
  20. 375769
  21. 112225
  22. 829921
  23. 157609
  24. 110889
  25. 150544
  26. 22801
  27. 58736896
  28. 756900
  29. 519841
  30. 31225744
  31. 212521
  32. 22610025
  33. 219961
  34. 3426201
  35. 451584
  36. 73984
  37. 305809
  38. 70543201
  39. 75625
  40. 152100

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