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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 936 · 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. 1.5811² =
  2. 2.648² =
  3. 3.970² =
  4. 4.275² =
  5. 5.368² =
  6. 6.822² =
  7. 7.4522² =
  8. 8.1063² =
  9. 9.193² =
  10. 10.5726² =
  11. 11.215² =
  12. 12.260² =
  13. 13.3075² =
  14. 14.573² =
  15. 15.287² =
  16. 16.161² =
  17. 17.724² =
  18. 18.1323² =
  19. 19.223² =
  20. 20.265² =
  21. 21.8322² =
  22. 22.539² =
  23. 23.4617² =
  24. 24.514² =
  25. 25.2191² =
  26. 26.855² =
  27. 27.520² =
  28. 28.1002² =
  29. 29.950² =
  30. 30.781² =
  31. 31.971² =
  32. 32.253² =
  33. 33.5894² =
  34. 34.390² =
  35. 35.191² =
  36. 36.5174² =
  37. 37.3105² =
  38. 38.544² =
  39. 39.702² =
  40. 40.655² =

Answer key

  1. 33767721
  2. 419904
  3. 940900
  4. 75625
  5. 135424
  6. 675684
  7. 20448484
  8. 1129969
  9. 37249
  10. 32787076
  11. 46225
  12. 67600
  13. 9455625
  14. 328329
  15. 82369
  16. 25921
  17. 524176
  18. 1750329
  19. 49729
  20. 70225
  21. 69255684
  22. 290521
  23. 21316689
  24. 264196
  25. 4800481
  26. 731025
  27. 270400
  28. 1004004
  29. 902500
  30. 609961
  31. 942841
  32. 64009
  33. 34739236
  34. 152100
  35. 36481
  36. 26770276
  37. 9641025
  38. 295936
  39. 492804
  40. 429025

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