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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 415 · 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. 1.141² =
  2. 2.436² =
  3. 3.119² =
  4. 4.7900² =
  5. 5.4577² =
  6. 6.129² =
  7. 7.314² =
  8. 8.194² =
  9. 9.742² =
  10. 10.4694² =
  11. 11.548² =
  12. 12.906² =
  13. 13.8596² =
  14. 14.103² =
  15. 15.2212² =
  16. 16.825² =
  17. 17.715² =
  18. 18.183² =
  19. 19.997² =
  20. 20.939² =
  21. 21.8482² =
  22. 22.829² =
  23. 23.344² =
  24. 24.4233² =
  25. 25.682² =
  26. 26.580² =
  27. 27.2548² =
  28. 28.9926² =
  29. 29.281² =
  30. 30.7099² =
  31. 31.742² =
  32. 32.2120² =
  33. 33.820² =
  34. 34.796² =
  35. 35.249² =
  36. 36.878² =
  37. 37.543² =
  38. 38.2308² =
  39. 39.6768² =
  40. 40.267² =

Answer key

  1. 19881
  2. 190096
  3. 14161
  4. 62410000
  5. 20948929
  6. 16641
  7. 98596
  8. 37636
  9. 550564
  10. 22033636
  11. 300304
  12. 820836
  13. 73891216
  14. 10609
  15. 4892944
  16. 680625
  17. 511225
  18. 33489
  19. 994009
  20. 881721
  21. 71944324
  22. 687241
  23. 118336
  24. 17918289
  25. 465124
  26. 336400
  27. 6492304
  28. 98525476
  29. 78961
  30. 50395801
  31. 550564
  32. 4494400
  33. 672400
  34. 633616
  35. 62001
  36. 770884
  37. 294849
  38. 5326864
  39. 45805824
  40. 71289

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