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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 641 · 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. 1.8846² =
  2. 2.209² =
  3. 3.1827² =
  4. 4.427² =
  5. 5.1774² =
  6. 6.447² =
  7. 7.1778² =
  8. 8.402² =
  9. 9.307² =
  10. 10.110² =
  11. 11.5372² =
  12. 12.849² =
  13. 13.612² =
  14. 14.4170² =
  15. 15.2578² =
  16. 16.4009² =
  17. 17.4472² =
  18. 18.942² =
  19. 19.635² =
  20. 20.534² =
  21. 21.358² =
  22. 22.783² =
  23. 23.502² =
  24. 24.360² =
  25. 25.4699² =
  26. 26.811² =
  27. 27.980² =
  28. 28.5130² =
  29. 29.1552² =
  30. 30.1750² =
  31. 31.645² =
  32. 32.226² =
  33. 33.6067² =
  34. 34.373² =
  35. 35.970² =
  36. 36.325² =
  37. 37.166² =
  38. 38.187² =
  39. 39.7132² =
  40. 40.902² =

Answer key

  1. 78251716
  2. 43681
  3. 3337929
  4. 182329
  5. 3147076
  6. 199809
  7. 3161284
  8. 161604
  9. 94249
  10. 12100
  11. 28858384
  12. 720801
  13. 374544
  14. 17388900
  15. 6646084
  16. 16072081
  17. 19998784
  18. 887364
  19. 403225
  20. 285156
  21. 128164
  22. 613089
  23. 252004
  24. 129600
  25. 22080601
  26. 657721
  27. 960400
  28. 26316900
  29. 2408704
  30. 3062500
  31. 416025
  32. 51076
  33. 36808489
  34. 139129
  35. 940900
  36. 105625
  37. 27556
  38. 34969
  39. 50865424
  40. 813604

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