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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 434 · 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. 1.236² =
  2. 2.359² =
  3. 3.269² =
  4. 4.584² =
  5. 5.524² =
  6. 6.112² =
  7. 7.232² =
  8. 8.580² =
  9. 9.4004² =
  10. 10.407² =
  11. 11.3658² =
  12. 12.2129² =
  13. 13.351² =
  14. 14.229² =
  15. 15.322² =
  16. 16.707² =
  17. 17.227² =
  18. 18.163² =
  19. 19.9216² =
  20. 20.7246² =
  21. 21.2424² =
  22. 22.878² =
  23. 23.120² =
  24. 24.8789² =
  25. 25.5860² =
  26. 26.8354² =
  27. 27.143² =
  28. 28.2660² =
  29. 29.863² =
  30. 30.4618² =
  31. 31.3281² =
  32. 32.2661² =
  33. 33.117² =
  34. 34.113² =
  35. 35.882² =
  36. 36.735² =
  37. 37.9251² =
  38. 38.304² =
  39. 39.915² =
  40. 40.632² =

Answer key

  1. 55696
  2. 128881
  3. 72361
  4. 341056
  5. 274576
  6. 12544
  7. 53824
  8. 336400
  9. 16032016
  10. 165649
  11. 13380964
  12. 4532641
  13. 123201
  14. 52441
  15. 103684
  16. 499849
  17. 51529
  18. 26569
  19. 84934656
  20. 52504516
  21. 5875776
  22. 770884
  23. 14400
  24. 77246521
  25. 34339600
  26. 69789316
  27. 20449
  28. 7075600
  29. 744769
  30. 21325924
  31. 10764961
  32. 7080921
  33. 13689
  34. 12769
  35. 777924
  36. 540225
  37. 85581001
  38. 92416
  39. 837225
  40. 399424

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