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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 280 · 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. 1.772² =
  2. 2.257² =
  3. 3.8402² =
  4. 4.796² =
  5. 5.168² =
  6. 6.340² =
  7. 7.988² =
  8. 8.1422² =
  9. 9.307² =
  10. 10.263² =
  11. 11.1079² =
  12. 12.474² =
  13. 13.5705² =
  14. 14.914² =
  15. 15.5674² =
  16. 16.5528² =
  17. 17.271² =
  18. 18.407² =
  19. 19.6810² =
  20. 20.1860² =
  21. 21.326² =
  22. 22.8734² =
  23. 23.9797² =
  24. 24.9415² =
  25. 25.914² =
  26. 26.945² =
  27. 27.4850² =
  28. 28.614² =
  29. 29.1895² =
  30. 30.1577² =
  31. 31.5469² =
  32. 32.3346² =
  33. 33.9663² =
  34. 34.264² =
  35. 35.5579² =
  36. 36.930² =
  37. 37.120² =
  38. 38.315² =
  39. 39.6241² =
  40. 40.263² =

Answer key

  1. 595984
  2. 66049
  3. 70593604
  4. 633616
  5. 28224
  6. 115600
  7. 976144
  8. 2022084
  9. 94249
  10. 69169
  11. 1164241
  12. 224676
  13. 32547025
  14. 835396
  15. 32194276
  16. 30558784
  17. 73441
  18. 165649
  19. 46376100
  20. 3459600
  21. 106276
  22. 76282756
  23. 95981209
  24. 88642225
  25. 835396
  26. 893025
  27. 23522500
  28. 376996
  29. 3591025
  30. 2486929
  31. 29909961
  32. 11195716
  33. 93373569
  34. 69696
  35. 31125241
  36. 864900
  37. 14400
  38. 99225
  39. 38950081
  40. 69169

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