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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 845 · 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. 1.988² =
  2. 2.8113² =
  3. 3.6635² =
  4. 4.111² =
  5. 5.4649² =
  6. 6.874² =
  7. 7.5357² =
  8. 8.3911² =
  9. 9.220² =
  10. 10.892² =
  11. 11.714² =
  12. 12.5887² =
  13. 13.323² =
  14. 14.1488² =
  15. 15.347² =
  16. 16.6205² =
  17. 17.5109² =
  18. 18.4253² =
  19. 19.276² =
  20. 20.677² =
  21. 21.720² =
  22. 22.706² =
  23. 23.969² =
  24. 24.726² =
  25. 25.773² =
  26. 26.844² =
  27. 27.9767² =
  28. 28.2281² =
  29. 29.8207² =
  30. 30.878² =
  31. 31.1524² =
  32. 32.357² =
  33. 33.182² =
  34. 34.935² =
  35. 35.343² =
  36. 36.5704² =
  37. 37.865² =
  38. 38.902² =
  39. 39.933² =
  40. 40.722² =

Answer key

  1. 976144
  2. 65820769
  3. 44023225
  4. 12321
  5. 21613201
  6. 763876
  7. 28697449
  8. 15295921
  9. 48400
  10. 795664
  11. 509796
  12. 34656769
  13. 104329
  14. 2214144
  15. 120409
  16. 38502025
  17. 26101881
  18. 18088009
  19. 76176
  20. 458329
  21. 518400
  22. 498436
  23. 938961
  24. 527076
  25. 597529
  26. 712336
  27. 95394289
  28. 5202961
  29. 67354849
  30. 770884
  31. 2322576
  32. 127449
  33. 33124
  34. 874225
  35. 117649
  36. 32535616
  37. 748225
  38. 813604
  39. 870489
  40. 521284

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