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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 181 · 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. 1.880² =
  2. 2.541² =
  3. 3.8325² =
  4. 4.7535² =
  5. 5.738² =
  6. 6.188² =
  7. 7.169² =
  8. 8.696² =
  9. 9.3439² =
  10. 10.613² =
  11. 11.7235² =
  12. 12.309² =
  13. 13.206² =
  14. 14.150² =
  15. 15.2020² =
  16. 16.6007² =
  17. 17.4847² =
  18. 18.975² =
  19. 19.490² =
  20. 20.190² =
  21. 21.5158² =
  22. 22.916² =
  23. 23.214² =
  24. 24.507² =
  25. 25.978² =
  26. 26.868² =
  27. 27.271² =
  28. 28.398² =
  29. 29.2006² =
  30. 30.542² =
  31. 31.162² =
  32. 32.7349² =
  33. 33.552² =
  34. 34.470² =
  35. 35.484² =
  36. 36.167² =
  37. 37.968² =
  38. 38.170² =
  39. 39.464² =
  40. 40.719² =

Answer key

  1. 774400
  2. 292681
  3. 69305625
  4. 56776225
  5. 544644
  6. 35344
  7. 28561
  8. 484416
  9. 11826721
  10. 375769
  11. 52345225
  12. 95481
  13. 42436
  14. 22500
  15. 4080400
  16. 36084049
  17. 23493409
  18. 950625
  19. 240100
  20. 36100
  21. 26604964
  22. 839056
  23. 45796
  24. 257049
  25. 956484
  26. 753424
  27. 73441
  28. 158404
  29. 4024036
  30. 293764
  31. 26244
  32. 54007801
  33. 304704
  34. 220900
  35. 234256
  36. 27889
  37. 937024
  38. 28900
  39. 215296
  40. 516961

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