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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 877 · 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. 1.702² =
  2. 2.486² =
  3. 3.440² =
  4. 4.130² =
  5. 5.537² =
  6. 6.144² =
  7. 7.350² =
  8. 8.861² =
  9. 9.913² =
  10. 10.960² =
  11. 11.510² =
  12. 12.6007² =
  13. 13.805² =
  14. 14.915² =
  15. 15.437² =
  16. 16.7903² =
  17. 17.567² =
  18. 18.7354² =
  19. 19.762² =
  20. 20.135² =
  21. 21.2657² =
  22. 22.365² =
  23. 23.485² =
  24. 24.843² =
  25. 25.885² =
  26. 26.502² =
  27. 27.752² =
  28. 28.879² =
  29. 29.945² =
  30. 30.4394² =
  31. 31.356² =
  32. 32.8744² =
  33. 33.6410² =
  34. 34.1654² =
  35. 35.9928² =
  36. 36.642² =
  37. 37.802² =
  38. 38.275² =
  39. 39.112² =
  40. 40.451² =

Answer key

  1. 492804
  2. 236196
  3. 193600
  4. 16900
  5. 288369
  6. 20736
  7. 122500
  8. 741321
  9. 833569
  10. 921600
  11. 260100
  12. 36084049
  13. 648025
  14. 837225
  15. 190969
  16. 62457409
  17. 321489
  18. 54081316
  19. 580644
  20. 18225
  21. 7059649
  22. 133225
  23. 235225
  24. 710649
  25. 783225
  26. 252004
  27. 565504
  28. 772641
  29. 893025
  30. 19307236
  31. 126736
  32. 76457536
  33. 41088100
  34. 2735716
  35. 98565184
  36. 412164
  37. 643204
  38. 75625
  39. 12544
  40. 203401

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