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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 33 · 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. 1.620² =
  2. 2.666² =
  3. 3.575² =
  4. 4.172² =
  5. 5.373² =
  6. 6.476² =
  7. 7.160² =
  8. 8.931² =
  9. 9.567² =
  10. 10.883² =
  11. 11.522² =
  12. 12.394² =
  13. 13.300² =
  14. 14.727² =
  15. 15.4302² =
  16. 16.1771² =
  17. 17.490² =
  18. 18.312² =
  19. 19.2189² =
  20. 20.840² =
  21. 21.9135² =
  22. 22.398² =
  23. 23.8564² =
  24. 24.9802² =
  25. 25.379² =
  26. 26.4872² =
  27. 27.597² =
  28. 28.5305² =
  29. 29.345² =
  30. 30.372² =
  31. 31.9617² =
  32. 32.738² =
  33. 33.450² =
  34. 34.187² =
  35. 35.350² =
  36. 36.746² =
  37. 37.8346² =
  38. 38.2663² =
  39. 39.988² =
  40. 40.1075² =

Answer key

  1. 384400
  2. 443556
  3. 330625
  4. 29584
  5. 139129
  6. 226576
  7. 25600
  8. 866761
  9. 321489
  10. 779689
  11. 272484
  12. 155236
  13. 90000
  14. 528529
  15. 18507204
  16. 3136441
  17. 240100
  18. 97344
  19. 4791721
  20. 705600
  21. 83448225
  22. 158404
  23. 73342096
  24. 96079204
  25. 143641
  26. 23736384
  27. 356409
  28. 28143025
  29. 119025
  30. 138384
  31. 92486689
  32. 544644
  33. 202500
  34. 34969
  35. 122500
  36. 556516
  37. 69655716
  38. 7091569
  39. 976144
  40. 1155625

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