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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 133 · 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. 1.2460² =
  2. 2.368² =
  3. 3.110² =
  4. 4.7905² =
  5. 5.692² =
  6. 6.2953² =
  7. 7.7982² =
  8. 8.525² =
  9. 9.9275² =
  10. 10.504² =
  11. 11.140² =
  12. 12.353² =
  13. 13.5075² =
  14. 14.411² =
  15. 15.7242² =
  16. 16.354² =
  17. 17.162² =
  18. 18.6309² =
  19. 19.965² =
  20. 20.5416² =
  21. 21.243² =
  22. 22.729² =
  23. 23.776² =
  24. 24.6418² =
  25. 25.5671² =
  26. 26.5610² =
  27. 27.4838² =
  28. 28.7442² =
  29. 29.195² =
  30. 30.2305² =
  31. 31.518² =
  32. 32.953² =
  33. 33.2552² =
  34. 34.896² =
  35. 35.682² =
  36. 36.876² =
  37. 37.5632² =
  38. 38.5957² =
  39. 39.6539² =
  40. 40.778² =

Answer key

  1. 6051600
  2. 135424
  3. 12100
  4. 62489025
  5. 478864
  6. 8720209
  7. 63712324
  8. 275625
  9. 86025625
  10. 254016
  11. 19600
  12. 124609
  13. 25755625
  14. 168921
  15. 52446564
  16. 125316
  17. 26244
  18. 39803481
  19. 931225
  20. 29333056
  21. 59049
  22. 531441
  23. 602176
  24. 41190724
  25. 32160241
  26. 31472100
  27. 23406244
  28. 55383364
  29. 38025
  30. 5313025
  31. 268324
  32. 908209
  33. 6512704
  34. 802816
  35. 465124
  36. 767376
  37. 31719424
  38. 35485849
  39. 42758521
  40. 605284

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