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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 239 · 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. 1.546² =
  2. 2.4917² =
  3. 3.817² =
  4. 4.3533² =
  5. 5.640² =
  6. 6.761² =
  7. 7.7516² =
  8. 8.121² =
  9. 9.2199² =
  10. 10.488² =
  11. 11.336² =
  12. 12.584² =
  13. 13.182² =
  14. 14.982² =
  15. 15.721² =
  16. 16.225² =
  17. 17.1453² =
  18. 18.542² =
  19. 19.815² =
  20. 20.827² =
  21. 21.7071² =
  22. 22.403² =
  23. 23.136² =
  24. 24.508² =
  25. 25.770² =
  26. 26.301² =
  27. 27.558² =
  28. 28.7812² =
  29. 29.882² =
  30. 30.936² =
  31. 31.3027² =
  32. 32.306² =
  33. 33.848² =
  34. 34.781² =
  35. 35.467² =
  36. 36.9736² =
  37. 37.946² =
  38. 38.722² =
  39. 39.988² =
  40. 40.743² =

Answer key

  1. 298116
  2. 24176889
  3. 667489
  4. 12482089
  5. 409600
  6. 579121
  7. 56490256
  8. 14641
  9. 4835601
  10. 238144
  11. 112896
  12. 341056
  13. 33124
  14. 964324
  15. 519841
  16. 50625
  17. 2111209
  18. 293764
  19. 664225
  20. 683929
  21. 49999041
  22. 162409
  23. 18496
  24. 258064
  25. 592900
  26. 90601
  27. 311364
  28. 61027344
  29. 777924
  30. 876096
  31. 9162729
  32. 93636
  33. 719104
  34. 609961
  35. 218089
  36. 94789696
  37. 894916
  38. 521284
  39. 976144
  40. 552049

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