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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 139 · 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. 1.6800² =
  2. 2.3754² =
  3. 3.247² =
  4. 4.9630² =
  5. 5.6664² =
  6. 6.838² =
  7. 7.391² =
  8. 8.189² =
  9. 9.414² =
  10. 10.880² =
  11. 11.2602² =
  12. 12.432² =
  13. 13.9420² =
  14. 14.3037² =
  15. 15.816² =
  16. 16.9466² =
  17. 17.737² =
  18. 18.642² =
  19. 19.715² =
  20. 20.607² =
  21. 21.143² =
  22. 22.969² =
  23. 23.4039² =
  24. 24.322² =
  25. 25.370² =
  26. 26.6949² =
  27. 27.536² =
  28. 28.874² =
  29. 29.468² =
  30. 30.473² =
  31. 31.174² =
  32. 32.497² =
  33. 33.574² =
  34. 34.325² =
  35. 35.174² =
  36. 36.9870² =
  37. 37.610² =
  38. 38.662² =
  39. 39.326² =
  40. 40.504² =

Answer key

  1. 46240000
  2. 14092516
  3. 61009
  4. 92736900
  5. 44408896
  6. 702244
  7. 152881
  8. 35721
  9. 171396
  10. 774400
  11. 6770404
  12. 186624
  13. 88736400
  14. 9223369
  15. 665856
  16. 89605156
  17. 543169
  18. 412164
  19. 511225
  20. 368449
  21. 20449
  22. 938961
  23. 16313521
  24. 103684
  25. 136900
  26. 48288601
  27. 287296
  28. 763876
  29. 219024
  30. 223729
  31. 30276
  32. 247009
  33. 329476
  34. 105625
  35. 30276
  36. 97416900
  37. 372100
  38. 438244
  39. 106276
  40. 254016

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