← Squares of 3- and 4-digit numbers lesson New set →

Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 988 · 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. 1.272² =
  2. 2.741² =
  3. 3.3960² =
  4. 4.5406² =
  5. 5.5982² =
  6. 6.665² =
  7. 7.342² =
  8. 8.2000² =
  9. 9.816² =
  10. 10.186² =
  11. 11.137² =
  12. 12.628² =
  13. 13.698² =
  14. 14.7225² =
  15. 15.357² =
  16. 16.640² =
  17. 17.244² =
  18. 18.701² =
  19. 19.6123² =
  20. 20.4549² =
  21. 21.189² =
  22. 22.527² =
  23. 23.802² =
  24. 24.489² =
  25. 25.895² =
  26. 26.909² =
  27. 27.789² =
  28. 28.509² =
  29. 29.359² =
  30. 30.267² =
  31. 31.8245² =
  32. 32.2931² =
  33. 33.9349² =
  34. 34.3489² =
  35. 35.199² =
  36. 36.846² =
  37. 37.452² =
  38. 38.106² =
  39. 39.2218² =
  40. 40.467² =

Answer key

  1. 73984
  2. 549081
  3. 15681600
  4. 29224836
  5. 35784324
  6. 442225
  7. 116964
  8. 4000000
  9. 665856
  10. 34596
  11. 18769
  12. 394384
  13. 487204
  14. 52200625
  15. 127449
  16. 409600
  17. 59536
  18. 491401
  19. 37491129
  20. 20693401
  21. 35721
  22. 277729
  23. 643204
  24. 239121
  25. 801025
  26. 826281
  27. 622521
  28. 259081
  29. 128881
  30. 71289
  31. 67980025
  32. 8590761
  33. 87403801
  34. 12173121
  35. 39601
  36. 715716
  37. 204304
  38. 11236
  39. 4919524
  40. 218089

Free vedic maths lessons, practice and worksheets at talentjr.in/vedic-maths