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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 993 · 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. 1.1301² =
  2. 2.585² =
  3. 3.214² =
  4. 4.314² =
  5. 5.623² =
  6. 6.455² =
  7. 7.240² =
  8. 8.544² =
  9. 9.114² =
  10. 10.765² =
  11. 11.740² =
  12. 12.884² =
  13. 13.693² =
  14. 14.527² =
  15. 15.247² =
  16. 16.731² =
  17. 17.6400² =
  18. 18.856² =
  19. 19.583² =
  20. 20.8083² =
  21. 21.7694² =
  22. 22.5797² =
  23. 23.7492² =
  24. 24.969² =
  25. 25.8403² =
  26. 26.597² =
  27. 27.126² =
  28. 28.665² =
  29. 29.467² =
  30. 30.791² =
  31. 31.2610² =
  32. 32.895² =
  33. 33.7353² =
  34. 34.3335² =
  35. 35.9988² =
  36. 36.2261² =
  37. 37.889² =
  38. 38.4284² =
  39. 39.731² =
  40. 40.198² =

Answer key

  1. 1692601
  2. 342225
  3. 45796
  4. 98596
  5. 388129
  6. 207025
  7. 57600
  8. 295936
  9. 12996
  10. 585225
  11. 547600
  12. 781456
  13. 480249
  14. 277729
  15. 61009
  16. 534361
  17. 40960000
  18. 732736
  19. 339889
  20. 65334889
  21. 59197636
  22. 33605209
  23. 56130064
  24. 938961
  25. 70610409
  26. 356409
  27. 15876
  28. 442225
  29. 218089
  30. 625681
  31. 6812100
  32. 801025
  33. 54066609
  34. 11122225
  35. 99760144
  36. 5112121
  37. 790321
  38. 18352656
  39. 534361
  40. 39204

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