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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 548 · 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. 1.359² =
  2. 2.4632² =
  3. 3.110² =
  4. 4.114² =
  5. 5.206² =
  6. 6.416² =
  7. 7.873² =
  8. 8.194² =
  9. 9.500² =
  10. 10.480² =
  11. 11.876² =
  12. 12.9583² =
  13. 13.955² =
  14. 14.9068² =
  15. 15.114² =
  16. 16.238² =
  17. 17.222² =
  18. 18.488² =
  19. 19.333² =
  20. 20.140² =
  21. 21.777² =
  22. 22.535² =
  23. 23.263² =
  24. 24.587² =
  25. 25.1311² =
  26. 26.5814² =
  27. 27.190² =
  28. 28.341² =
  29. 29.341² =
  30. 30.633² =
  31. 31.537² =
  32. 32.138² =
  33. 33.707² =
  34. 34.3604² =
  35. 35.826² =
  36. 36.251² =
  37. 37.6151² =
  38. 38.754² =
  39. 39.759² =
  40. 40.774² =

Answer key

  1. 128881
  2. 21455424
  3. 12100
  4. 12996
  5. 42436
  6. 173056
  7. 762129
  8. 37636
  9. 250000
  10. 230400
  11. 767376
  12. 91833889
  13. 912025
  14. 82228624
  15. 12996
  16. 56644
  17. 49284
  18. 238144
  19. 110889
  20. 19600
  21. 603729
  22. 286225
  23. 69169
  24. 344569
  25. 1718721
  26. 33802596
  27. 36100
  28. 116281
  29. 116281
  30. 400689
  31. 288369
  32. 19044
  33. 499849
  34. 12988816
  35. 682276
  36. 63001
  37. 37834801
  38. 568516
  39. 576081
  40. 599076

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