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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 989 · 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. 1.4118² =
  2. 2.8447² =
  3. 3.709² =
  4. 4.224² =
  5. 5.508² =
  6. 6.264² =
  7. 7.1273² =
  8. 8.120² =
  9. 9.733² =
  10. 10.432² =
  11. 11.287² =
  12. 12.589² =
  13. 13.308² =
  14. 14.6195² =
  15. 15.832² =
  16. 16.9999² =
  17. 17.769² =
  18. 18.8978² =
  19. 19.971² =
  20. 20.1794² =
  21. 21.909² =
  22. 22.698² =
  23. 23.321² =
  24. 24.3628² =
  25. 25.9084² =
  26. 26.305² =
  27. 27.8344² =
  28. 28.2532² =
  29. 29.175² =
  30. 30.379² =
  31. 31.488² =
  32. 32.428² =
  33. 33.572² =
  34. 34.9432² =
  35. 35.528² =
  36. 36.643² =
  37. 37.275² =
  38. 38.737² =
  39. 39.173² =
  40. 40.188² =

Answer key

  1. 16957924
  2. 71351809
  3. 502681
  4. 50176
  5. 258064
  6. 69696
  7. 1620529
  8. 14400
  9. 537289
  10. 186624
  11. 82369
  12. 346921
  13. 94864
  14. 38378025
  15. 692224
  16. 99980001
  17. 591361
  18. 80604484
  19. 942841
  20. 3218436
  21. 826281
  22. 487204
  23. 103041
  24. 13162384
  25. 82519056
  26. 93025
  27. 69622336
  28. 6411024
  29. 30625
  30. 143641
  31. 238144
  32. 183184
  33. 327184
  34. 88962624
  35. 278784
  36. 413449
  37. 75625
  38. 543169
  39. 29929
  40. 35344

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