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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 435 · 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. 1.339² =
  2. 2.4431² =
  3. 3.5132² =
  4. 4.875² =
  5. 5.153² =
  6. 6.309² =
  7. 7.614² =
  8. 8.911² =
  9. 9.781² =
  10. 10.980² =
  11. 11.850² =
  12. 12.868² =
  13. 13.956² =
  14. 14.625² =
  15. 15.293² =
  16. 16.2876² =
  17. 17.323² =
  18. 18.7652² =
  19. 19.167² =
  20. 20.807² =
  21. 21.161² =
  22. 22.415² =
  23. 23.116² =
  24. 24.390² =
  25. 25.594² =
  26. 26.7556² =
  27. 27.586² =
  28. 28.227² =
  29. 29.8964² =
  30. 30.2976² =
  31. 31.420² =
  32. 32.106² =
  33. 33.885² =
  34. 34.527² =
  35. 35.292² =
  36. 36.5664² =
  37. 37.2114² =
  38. 38.189² =
  39. 39.6424² =
  40. 40.120² =

Answer key

  1. 114921
  2. 19633761
  3. 26337424
  4. 765625
  5. 23409
  6. 95481
  7. 376996
  8. 829921
  9. 609961
  10. 960400
  11. 722500
  12. 753424
  13. 913936
  14. 390625
  15. 85849
  16. 8271376
  17. 104329
  18. 58553104
  19. 27889
  20. 651249
  21. 25921
  22. 172225
  23. 13456
  24. 152100
  25. 352836
  26. 57093136
  27. 343396
  28. 51529
  29. 80353296
  30. 8856576
  31. 176400
  32. 11236
  33. 783225
  34. 277729
  35. 85264
  36. 32080896
  37. 4468996
  38. 35721
  39. 41267776
  40. 14400

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