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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 183 · 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. 1.383² =
  2. 2.115² =
  3. 3.296² =
  4. 4.539² =
  5. 5.2041² =
  6. 6.777² =
  7. 7.8727² =
  8. 8.847² =
  9. 9.3145² =
  10. 10.346² =
  11. 11.142² =
  12. 12.527² =
  13. 13.4868² =
  14. 14.195² =
  15. 15.186² =
  16. 16.7640² =
  17. 17.133² =
  18. 18.276² =
  19. 19.3269² =
  20. 20.976² =
  21. 21.343² =
  22. 22.264² =
  23. 23.9384² =
  24. 24.945² =
  25. 25.6170² =
  26. 26.4395² =
  27. 27.719² =
  28. 28.835² =
  29. 29.673² =
  30. 30.2594² =
  31. 31.3012² =
  32. 32.861² =
  33. 33.108² =
  34. 34.5130² =
  35. 35.174² =
  36. 36.157² =
  37. 37.701² =
  38. 38.4203² =
  39. 39.340² =
  40. 40.7231² =

Answer key

  1. 146689
  2. 13225
  3. 87616
  4. 290521
  5. 4165681
  6. 603729
  7. 76160529
  8. 717409
  9. 9891025
  10. 119716
  11. 20164
  12. 277729
  13. 23697424
  14. 38025
  15. 34596
  16. 58369600
  17. 17689
  18. 76176
  19. 10686361
  20. 952576
  21. 117649
  22. 69696
  23. 88059456
  24. 893025
  25. 38068900
  26. 19316025
  27. 516961
  28. 697225
  29. 452929
  30. 6728836
  31. 9072144
  32. 741321
  33. 11664
  34. 26316900
  35. 30276
  36. 24649
  37. 491401
  38. 17665209
  39. 115600
  40. 52287361

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