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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 485 · 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. 1.743² =
  2. 2.9340² =
  3. 3.181² =
  4. 4.419² =
  5. 5.331² =
  6. 6.871² =
  7. 7.213² =
  8. 8.435² =
  9. 9.842² =
  10. 10.641² =
  11. 11.592² =
  12. 12.134² =
  13. 13.996² =
  14. 14.152² =
  15. 15.689² =
  16. 16.563² =
  17. 17.5548² =
  18. 18.233² =
  19. 19.632² =
  20. 20.7423² =
  21. 21.639² =
  22. 22.976² =
  23. 23.505² =
  24. 24.144² =
  25. 25.9184² =
  26. 26.2992² =
  27. 27.1568² =
  28. 28.933² =
  29. 29.159² =
  30. 30.5483² =
  31. 31.5876² =
  32. 32.614² =
  33. 33.112² =
  34. 34.4273² =
  35. 35.490² =
  36. 36.790² =
  37. 37.130² =
  38. 38.945² =
  39. 39.8931² =
  40. 40.700² =

Answer key

  1. 552049
  2. 87235600
  3. 32761
  4. 175561
  5. 109561
  6. 758641
  7. 45369
  8. 189225
  9. 708964
  10. 410881
  11. 350464
  12. 17956
  13. 992016
  14. 23104
  15. 474721
  16. 316969
  17. 30780304
  18. 54289
  19. 399424
  20. 55100929
  21. 408321
  22. 952576
  23. 255025
  24. 20736
  25. 84345856
  26. 8952064
  27. 2458624
  28. 870489
  29. 25281
  30. 30063289
  31. 34527376
  32. 376996
  33. 12544
  34. 18258529
  35. 240100
  36. 624100
  37. 16900
  38. 893025
  39. 79762761
  40. 490000

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