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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 703 · 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. 1.743² =
  2. 2.153² =
  3. 3.174² =
  4. 4.382² =
  5. 5.455² =
  6. 6.722² =
  7. 7.585² =
  8. 8.734² =
  9. 9.311² =
  10. 10.875² =
  11. 11.1464² =
  12. 12.815² =
  13. 13.284² =
  14. 14.2551² =
  15. 15.751² =
  16. 16.2075² =
  17. 17.156² =
  18. 18.8761² =
  19. 19.451² =
  20. 20.944² =
  21. 21.476² =
  22. 22.576² =
  23. 23.557² =
  24. 24.555² =
  25. 25.181² =
  26. 26.342² =
  27. 27.3407² =
  28. 28.167² =
  29. 29.128² =
  30. 30.470² =
  31. 31.564² =
  32. 32.471² =
  33. 33.126² =
  34. 34.9167² =
  35. 35.406² =
  36. 36.583² =
  37. 37.398² =
  38. 38.606² =
  39. 39.745² =
  40. 40.838² =

Answer key

  1. 552049
  2. 23409
  3. 30276
  4. 145924
  5. 207025
  6. 521284
  7. 342225
  8. 538756
  9. 96721
  10. 765625
  11. 2143296
  12. 664225
  13. 80656
  14. 6507601
  15. 564001
  16. 4305625
  17. 24336
  18. 76755121
  19. 203401
  20. 891136
  21. 226576
  22. 331776
  23. 310249
  24. 308025
  25. 32761
  26. 116964
  27. 11607649
  28. 27889
  29. 16384
  30. 220900
  31. 318096
  32. 221841
  33. 15876
  34. 84033889
  35. 164836
  36. 339889
  37. 158404
  38. 367236
  39. 555025
  40. 702244

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