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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 730 · 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. 1.9796² =
  2. 2.556² =
  3. 3.2582² =
  4. 4.124² =
  5. 5.889² =
  6. 6.2051² =
  7. 7.9576² =
  8. 8.357² =
  9. 9.768² =
  10. 10.358² =
  11. 11.545² =
  12. 12.168² =
  13. 13.7158² =
  14. 14.7635² =
  15. 15.384² =
  16. 16.943² =
  17. 17.920² =
  18. 18.760² =
  19. 19.683² =
  20. 20.110² =
  21. 21.906² =
  22. 22.5505² =
  23. 23.2048² =
  24. 24.609² =
  25. 25.190² =
  26. 26.828² =
  27. 27.683² =
  28. 28.232² =
  29. 29.693² =
  30. 30.261² =
  31. 31.300² =
  32. 32.292² =
  33. 33.343² =
  34. 34.870² =
  35. 35.266² =
  36. 36.838² =
  37. 37.4786² =
  38. 38.401² =
  39. 39.9416² =
  40. 40.868² =

Answer key

  1. 95961616
  2. 309136
  3. 6666724
  4. 15376
  5. 790321
  6. 4206601
  7. 91699776
  8. 127449
  9. 589824
  10. 128164
  11. 297025
  12. 28224
  13. 51236964
  14. 58293225
  15. 147456
  16. 889249
  17. 846400
  18. 577600
  19. 466489
  20. 12100
  21. 820836
  22. 30305025
  23. 4194304
  24. 370881
  25. 36100
  26. 685584
  27. 466489
  28. 53824
  29. 480249
  30. 68121
  31. 90000
  32. 85264
  33. 117649
  34. 756900
  35. 70756
  36. 702244
  37. 22905796
  38. 160801
  39. 88661056
  40. 753424

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