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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 343 · 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. 1.707² =
  2. 2.808² =
  3. 3.223² =
  4. 4.354² =
  5. 5.651² =
  6. 6.7106² =
  7. 7.407² =
  8. 8.650² =
  9. 9.124² =
  10. 10.668² =
  11. 11.533² =
  12. 12.960² =
  13. 13.8092² =
  14. 14.910² =
  15. 15.7500² =
  16. 16.874² =
  17. 17.750² =
  18. 18.509² =
  19. 19.272² =
  20. 20.258² =
  21. 21.1752² =
  22. 22.460² =
  23. 23.195² =
  24. 24.8019² =
  25. 25.7534² =
  26. 26.922² =
  27. 27.490² =
  28. 28.153² =
  29. 29.9821² =
  30. 30.200² =
  31. 31.7846² =
  32. 32.421² =
  33. 33.1927² =
  34. 34.796² =
  35. 35.704² =
  36. 36.647² =
  37. 37.711² =
  38. 38.712² =
  39. 39.2050² =
  40. 40.574² =

Answer key

  1. 499849
  2. 652864
  3. 49729
  4. 125316
  5. 423801
  6. 50495236
  7. 165649
  8. 422500
  9. 15376
  10. 446224
  11. 284089
  12. 921600
  13. 65480464
  14. 828100
  15. 56250000
  16. 763876
  17. 562500
  18. 259081
  19. 73984
  20. 66564
  21. 3069504
  22. 211600
  23. 38025
  24. 64304361
  25. 56761156
  26. 850084
  27. 240100
  28. 23409
  29. 96452041
  30. 40000
  31. 61559716
  32. 177241
  33. 3713329
  34. 633616
  35. 495616
  36. 418609
  37. 505521
  38. 506944
  39. 4202500
  40. 329476

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