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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 937 · 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. 1.460² =
  2. 2.484² =
  3. 3.189² =
  4. 4.680² =
  5. 5.117² =
  6. 6.291² =
  7. 7.9590² =
  8. 8.5142² =
  9. 9.563² =
  10. 10.817² =
  11. 11.256² =
  12. 12.9001² =
  13. 13.941² =
  14. 14.367² =
  15. 15.1573² =
  16. 16.841² =
  17. 17.336² =
  18. 18.926² =
  19. 19.249² =
  20. 20.263² =
  21. 21.866² =
  22. 22.2245² =
  23. 23.7128² =
  24. 24.4437² =
  25. 25.516² =
  26. 26.191² =
  27. 27.1100² =
  28. 28.536² =
  29. 29.103² =
  30. 30.490² =
  31. 31.247² =
  32. 32.774² =
  33. 33.7550² =
  34. 34.425² =
  35. 35.4623² =
  36. 36.279² =
  37. 37.2826² =
  38. 38.437² =
  39. 39.6248² =
  40. 40.554² =

Answer key

  1. 211600
  2. 234256
  3. 35721
  4. 462400
  5. 13689
  6. 84681
  7. 91968100
  8. 26440164
  9. 316969
  10. 667489
  11. 65536
  12. 81018001
  13. 885481
  14. 134689
  15. 2474329
  16. 707281
  17. 112896
  18. 857476
  19. 62001
  20. 69169
  21. 749956
  22. 5040025
  23. 50808384
  24. 19686969
  25. 266256
  26. 36481
  27. 1210000
  28. 287296
  29. 10609
  30. 240100
  31. 61009
  32. 599076
  33. 57002500
  34. 180625
  35. 21372129
  36. 77841
  37. 7986276
  38. 190969
  39. 39037504
  40. 306916

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