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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 631 · 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. 1.621² =
  2. 2.804² =
  3. 3.149² =
  4. 4.882² =
  5. 5.837² =
  6. 6.806² =
  7. 7.876² =
  8. 8.931² =
  9. 9.496² =
  10. 10.7191² =
  11. 11.562² =
  12. 12.6541² =
  13. 13.5101² =
  14. 14.524² =
  15. 15.856² =
  16. 16.2738² =
  17. 17.650² =
  18. 18.371² =
  19. 19.282² =
  20. 20.997² =
  21. 21.926² =
  22. 22.3372² =
  23. 23.9383² =
  24. 24.530² =
  25. 25.455² =
  26. 26.3694² =
  27. 27.515² =
  28. 28.831² =
  29. 29.4371² =
  30. 30.370² =
  31. 31.920² =
  32. 32.9582² =
  33. 33.204² =
  34. 34.8700² =
  35. 35.356² =
  36. 36.2416² =
  37. 37.951² =
  38. 38.467² =
  39. 39.407² =
  40. 40.483² =

Answer key

  1. 385641
  2. 646416
  3. 22201
  4. 777924
  5. 700569
  6. 649636
  7. 767376
  8. 866761
  9. 246016
  10. 51710481
  11. 315844
  12. 42784681
  13. 26020201
  14. 274576
  15. 732736
  16. 7496644
  17. 422500
  18. 137641
  19. 79524
  20. 994009
  21. 857476
  22. 11370384
  23. 88040689
  24. 280900
  25. 207025
  26. 13645636
  27. 265225
  28. 690561
  29. 19105641
  30. 136900
  31. 846400
  32. 91814724
  33. 41616
  34. 75690000
  35. 126736
  36. 5837056
  37. 904401
  38. 218089
  39. 165649
  40. 233289

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