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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 419 · 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. 1.490² =
  2. 2.173² =
  3. 3.554² =
  4. 4.4255² =
  5. 5.167² =
  6. 6.7215² =
  7. 7.3318² =
  8. 8.9630² =
  9. 9.3532² =
  10. 10.283² =
  11. 11.597² =
  12. 12.1895² =
  13. 13.568² =
  14. 14.360² =
  15. 15.574² =
  16. 16.927² =
  17. 17.283² =
  18. 18.718² =
  19. 19.709² =
  20. 20.798² =
  21. 21.7591² =
  22. 22.333² =
  23. 23.7617² =
  24. 24.3717² =
  25. 25.837² =
  26. 26.656² =
  27. 27.2433² =
  28. 28.494² =
  29. 29.638² =
  30. 30.8116² =
  31. 31.816² =
  32. 32.172² =
  33. 33.423² =
  34. 34.681² =
  35. 35.7302² =
  36. 36.4847² =
  37. 37.9194² =
  38. 38.871² =
  39. 39.284² =
  40. 40.9792² =

Answer key

  1. 240100
  2. 29929
  3. 306916
  4. 18105025
  5. 27889
  6. 52056225
  7. 11009124
  8. 92736900
  9. 12475024
  10. 80089
  11. 356409
  12. 3591025
  13. 322624
  14. 129600
  15. 329476
  16. 859329
  17. 80089
  18. 515524
  19. 502681
  20. 636804
  21. 57623281
  22. 110889
  23. 58018689
  24. 13816089
  25. 700569
  26. 430336
  27. 5919489
  28. 244036
  29. 407044
  30. 65869456
  31. 665856
  32. 29584
  33. 178929
  34. 463761
  35. 53319204
  36. 23493409
  37. 84529636
  38. 758641
  39. 80656
  40. 95883264

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