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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 713 · 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. 1.424² =
  2. 2.794² =
  3. 3.147² =
  4. 4.155² =
  5. 5.680² =
  6. 6.329² =
  7. 7.624² =
  8. 8.455² =
  9. 9.560² =
  10. 10.252² =
  11. 11.768² =
  12. 12.416² =
  13. 13.2612² =
  14. 14.622² =
  15. 15.769² =
  16. 16.763² =
  17. 17.9609² =
  18. 18.503² =
  19. 19.819² =
  20. 20.205² =
  21. 21.869² =
  22. 22.375² =
  23. 23.342² =
  24. 24.3419² =
  25. 25.176² =
  26. 26.4742² =
  27. 27.997² =
  28. 28.9935² =
  29. 29.507² =
  30. 30.642² =
  31. 31.8736² =
  32. 32.436² =
  33. 33.800² =
  34. 34.153² =
  35. 35.591² =
  36. 36.293² =
  37. 37.9751² =
  38. 38.526² =
  39. 39.920² =
  40. 40.231² =

Answer key

  1. 179776
  2. 630436
  3. 21609
  4. 24025
  5. 462400
  6. 108241
  7. 389376
  8. 207025
  9. 313600
  10. 63504
  11. 589824
  12. 173056
  13. 6822544
  14. 386884
  15. 591361
  16. 582169
  17. 92332881
  18. 253009
  19. 670761
  20. 42025
  21. 755161
  22. 140625
  23. 116964
  24. 11689561
  25. 30976
  26. 22486564
  27. 994009
  28. 98704225
  29. 257049
  30. 412164
  31. 76317696
  32. 190096
  33. 640000
  34. 23409
  35. 349281
  36. 85849
  37. 95082001
  38. 276676
  39. 846400
  40. 53361

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