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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 543 · 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. 1.4875² =
  2. 2.538² =
  3. 3.7115² =
  4. 4.2956² =
  5. 5.149² =
  6. 6.607² =
  7. 7.954² =
  8. 8.598² =
  9. 9.561² =
  10. 10.7907² =
  11. 11.3391² =
  12. 12.9501² =
  13. 13.257² =
  14. 14.3000² =
  15. 15.305² =
  16. 16.570² =
  17. 17.9641² =
  18. 18.492² =
  19. 19.735² =
  20. 20.3999² =
  21. 21.736² =
  22. 22.240² =
  23. 23.7671² =
  24. 24.548² =
  25. 25.764² =
  26. 26.964² =
  27. 27.801² =
  28. 28.1035² =
  29. 29.351² =
  30. 30.833² =
  31. 31.3267² =
  32. 32.675² =
  33. 33.9101² =
  34. 34.1558² =
  35. 35.2756² =
  36. 36.829² =
  37. 37.2345² =
  38. 38.302² =
  39. 39.178² =
  40. 40.1549² =

Answer key

  1. 23765625
  2. 289444
  3. 50623225
  4. 8737936
  5. 22201
  6. 368449
  7. 910116
  8. 357604
  9. 314721
  10. 62520649
  11. 11498881
  12. 90269001
  13. 66049
  14. 9000000
  15. 93025
  16. 324900
  17. 92948881
  18. 242064
  19. 540225
  20. 15992001
  21. 541696
  22. 57600
  23. 58844241
  24. 300304
  25. 583696
  26. 929296
  27. 641601
  28. 1071225
  29. 123201
  30. 693889
  31. 10673289
  32. 455625
  33. 82828201
  34. 2427364
  35. 7595536
  36. 687241
  37. 5499025
  38. 91204
  39. 31684
  40. 2399401

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