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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 184 · 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. 1.319² =
  2. 2.816² =
  3. 3.986² =
  4. 4.720² =
  5. 5.1323² =
  6. 6.7539² =
  7. 7.419² =
  8. 8.614² =
  9. 9.299² =
  10. 10.288² =
  11. 11.883² =
  12. 12.581² =
  13. 13.209² =
  14. 14.328² =
  15. 15.279² =
  16. 16.980² =
  17. 17.7089² =
  18. 18.2715² =
  19. 19.5552² =
  20. 20.957² =
  21. 21.461² =
  22. 22.5313² =
  23. 23.564² =
  24. 24.213² =
  25. 25.236² =
  26. 26.559² =
  27. 27.241² =
  28. 28.567² =
  29. 29.4708² =
  30. 30.852² =
  31. 31.4870² =
  32. 32.398² =
  33. 33.584² =
  34. 34.216² =
  35. 35.961² =
  36. 36.147² =
  37. 37.877² =
  38. 38.324² =
  39. 39.721² =
  40. 40.4008² =

Answer key

  1. 101761
  2. 665856
  3. 972196
  4. 518400
  5. 1750329
  6. 56836521
  7. 175561
  8. 376996
  9. 89401
  10. 82944
  11. 779689
  12. 337561
  13. 43681
  14. 107584
  15. 77841
  16. 960400
  17. 50253921
  18. 7371225
  19. 30824704
  20. 915849
  21. 212521
  22. 28227969
  23. 318096
  24. 45369
  25. 55696
  26. 312481
  27. 58081
  28. 321489
  29. 22165264
  30. 725904
  31. 23716900
  32. 158404
  33. 341056
  34. 46656
  35. 923521
  36. 21609
  37. 769129
  38. 104976
  39. 519841
  40. 16064064

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