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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 545 · 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. 1.425² =
  2. 2.2688² =
  3. 3.352² =
  4. 4.5013² =
  5. 5.169² =
  6. 6.504² =
  7. 7.727² =
  8. 8.824² =
  9. 9.115² =
  10. 10.6882² =
  11. 11.548² =
  12. 12.209² =
  13. 13.509² =
  14. 14.8859² =
  15. 15.180² =
  16. 16.7919² =
  17. 17.9375² =
  18. 18.679² =
  19. 19.296² =
  20. 20.4462² =
  21. 21.475² =
  22. 22.761² =
  23. 23.185² =
  24. 24.596² =
  25. 25.8850² =
  26. 26.427² =
  27. 27.900² =
  28. 28.9326² =
  29. 29.829² =
  30. 30.870² =
  31. 31.752² =
  32. 32.307² =
  33. 33.7814² =
  34. 34.180² =
  35. 35.607² =
  36. 36.959² =
  37. 37.748² =
  38. 38.215² =
  39. 39.2830² =
  40. 40.961² =

Answer key

  1. 180625
  2. 7225344
  3. 123904
  4. 25130169
  5. 28561
  6. 254016
  7. 528529
  8. 678976
  9. 13225
  10. 47361924
  11. 300304
  12. 43681
  13. 259081
  14. 78481881
  15. 32400
  16. 62710561
  17. 87890625
  18. 461041
  19. 87616
  20. 19909444
  21. 225625
  22. 579121
  23. 34225
  24. 355216
  25. 78322500
  26. 182329
  27. 810000
  28. 86974276
  29. 687241
  30. 756900
  31. 565504
  32. 94249
  33. 61058596
  34. 32400
  35. 368449
  36. 919681
  37. 559504
  38. 46225
  39. 8008900
  40. 923521

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