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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 288 · 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. 1.183² =
  2. 2.343² =
  3. 3.735² =
  4. 4.651² =
  5. 5.778² =
  6. 6.8807² =
  7. 7.6504² =
  8. 8.414² =
  9. 9.745² =
  10. 10.710² =
  11. 11.141² =
  12. 12.6522² =
  13. 13.305² =
  14. 14.912² =
  15. 15.627² =
  16. 16.574² =
  17. 17.572² =
  18. 18.837² =
  19. 19.2507² =
  20. 20.2663² =
  21. 21.2450² =
  22. 22.734² =
  23. 23.786² =
  24. 24.2386² =
  25. 25.220² =
  26. 26.677² =
  27. 27.200² =
  28. 28.468² =
  29. 29.958² =
  30. 30.119² =
  31. 31.721² =
  32. 32.887² =
  33. 33.282² =
  34. 34.432² =
  35. 35.519² =
  36. 36.932² =
  37. 37.390² =
  38. 38.488² =
  39. 39.1262² =
  40. 40.754² =

Answer key

  1. 33489
  2. 117649
  3. 540225
  4. 423801
  5. 605284
  6. 77563249
  7. 42302016
  8. 171396
  9. 555025
  10. 504100
  11. 19881
  12. 42536484
  13. 93025
  14. 831744
  15. 393129
  16. 329476
  17. 327184
  18. 700569
  19. 6285049
  20. 7091569
  21. 6002500
  22. 538756
  23. 617796
  24. 5692996
  25. 48400
  26. 458329
  27. 40000
  28. 219024
  29. 917764
  30. 14161
  31. 519841
  32. 786769
  33. 79524
  34. 186624
  35. 269361
  36. 868624
  37. 152100
  38. 238144
  39. 1592644
  40. 568516

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