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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 704 · 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. 1.762² =
  2. 2.5358² =
  3. 3.497² =
  4. 4.6688² =
  5. 5.1391² =
  6. 6.3414² =
  7. 7.320² =
  8. 8.816² =
  9. 9.2021² =
  10. 10.3683² =
  11. 11.2807² =
  12. 12.1888² =
  13. 13.812² =
  14. 14.3168² =
  15. 15.481² =
  16. 16.895² =
  17. 17.162² =
  18. 18.256² =
  19. 19.102² =
  20. 20.912² =
  21. 21.988² =
  22. 22.5080² =
  23. 23.317² =
  24. 24.549² =
  25. 25.5761² =
  26. 26.368² =
  27. 27.524² =
  28. 28.130² =
  29. 29.789² =
  30. 30.337² =
  31. 31.844² =
  32. 32.320² =
  33. 33.2273² =
  34. 34.301² =
  35. 35.199² =
  36. 36.199² =
  37. 37.761² =
  38. 38.8486² =
  39. 39.439² =
  40. 40.3557² =

Answer key

  1. 580644
  2. 28708164
  3. 247009
  4. 44729344
  5. 1934881
  6. 11655396
  7. 102400
  8. 665856
  9. 4084441
  10. 13564489
  11. 7879249
  12. 3564544
  13. 659344
  14. 10036224
  15. 231361
  16. 801025
  17. 26244
  18. 65536
  19. 10404
  20. 831744
  21. 976144
  22. 25806400
  23. 100489
  24. 301401
  25. 33189121
  26. 135424
  27. 274576
  28. 16900
  29. 622521
  30. 113569
  31. 712336
  32. 102400
  33. 5166529
  34. 90601
  35. 39601
  36. 39601
  37. 579121
  38. 72012196
  39. 192721
  40. 12652249

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