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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 998 · 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. 1.3524² =
  2. 2.3597² =
  3. 3.905² =
  4. 4.7579² =
  5. 5.812² =
  6. 6.187² =
  7. 7.540² =
  8. 8.330² =
  9. 9.144² =
  10. 10.805² =
  11. 11.227² =
  12. 12.9555² =
  13. 13.209² =
  14. 14.2390² =
  15. 15.818² =
  16. 16.850² =
  17. 17.8108² =
  18. 18.175² =
  19. 19.684² =
  20. 20.1762² =
  21. 21.691² =
  22. 22.615² =
  23. 23.883² =
  24. 24.115² =
  25. 25.582² =
  26. 26.6859² =
  27. 27.484² =
  28. 28.441² =
  29. 29.625² =
  30. 30.521² =
  31. 31.885² =
  32. 32.320² =
  33. 33.1048² =
  34. 34.8328² =
  35. 35.8450² =
  36. 36.285² =
  37. 37.7781² =
  38. 38.286² =
  39. 39.489² =
  40. 40.505² =

Answer key

  1. 12418576
  2. 12938409
  3. 819025
  4. 57441241
  5. 659344
  6. 34969
  7. 291600
  8. 108900
  9. 20736
  10. 648025
  11. 51529
  12. 91298025
  13. 43681
  14. 5712100
  15. 669124
  16. 722500
  17. 65739664
  18. 30625
  19. 467856
  20. 3104644
  21. 477481
  22. 378225
  23. 779689
  24. 13225
  25. 338724
  26. 47045881
  27. 234256
  28. 194481
  29. 390625
  30. 271441
  31. 783225
  32. 102400
  33. 1098304
  34. 69355584
  35. 71402500
  36. 81225
  37. 60543961
  38. 81796
  39. 239121
  40. 255025

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