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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 502 · 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. 1.2767² =
  2. 2.725² =
  3. 3.6803² =
  4. 4.674² =
  5. 5.162² =
  6. 6.464² =
  7. 7.236² =
  8. 8.904² =
  9. 9.645² =
  10. 10.952² =
  11. 11.141² =
  12. 12.916² =
  13. 13.850² =
  14. 14.416² =
  15. 15.293² =
  16. 16.120² =
  17. 17.111² =
  18. 18.339² =
  19. 19.2855² =
  20. 20.291² =
  21. 21.585² =
  22. 22.570² =
  23. 23.849² =
  24. 24.458² =
  25. 25.323² =
  26. 26.584² =
  27. 27.8811² =
  28. 28.2791² =
  29. 29.562² =
  30. 30.2118² =
  31. 31.362² =
  32. 32.675² =
  33. 33.5407² =
  34. 34.692² =
  35. 35.306² =
  36. 36.8338² =
  37. 37.801² =
  38. 38.190² =
  39. 39.404² =
  40. 40.5365² =

Answer key

  1. 7656289
  2. 525625
  3. 46280809
  4. 454276
  5. 26244
  6. 215296
  7. 55696
  8. 817216
  9. 416025
  10. 906304
  11. 19881
  12. 839056
  13. 722500
  14. 173056
  15. 85849
  16. 14400
  17. 12321
  18. 114921
  19. 8151025
  20. 84681
  21. 342225
  22. 324900
  23. 720801
  24. 209764
  25. 104329
  26. 341056
  27. 77633721
  28. 7789681
  29. 315844
  30. 4485924
  31. 131044
  32. 455625
  33. 29235649
  34. 478864
  35. 93636
  36. 69522244
  37. 641601
  38. 36100
  39. 163216
  40. 28783225

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