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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 834 · 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. 1.138² =
  2. 2.970² =
  3. 3.530² =
  4. 4.7639² =
  5. 5.6483² =
  6. 6.9033² =
  7. 7.440² =
  8. 8.280² =
  9. 9.7952² =
  10. 10.2279² =
  11. 11.584² =
  12. 12.363² =
  13. 13.692² =
  14. 14.359² =
  15. 15.1991² =
  16. 16.597² =
  17. 17.307² =
  18. 18.683² =
  19. 19.128² =
  20. 20.911² =
  21. 21.638² =
  22. 22.667² =
  23. 23.778² =
  24. 24.639² =
  25. 25.697² =
  26. 26.187² =
  27. 27.174² =
  28. 28.768² =
  29. 29.285² =
  30. 30.806² =
  31. 31.259² =
  32. 32.4626² =
  33. 33.729² =
  34. 34.916² =
  35. 35.441² =
  36. 36.354² =
  37. 37.497² =
  38. 38.208² =
  39. 39.723² =
  40. 40.365² =

Answer key

  1. 19044
  2. 940900
  3. 280900
  4. 58354321
  5. 42029289
  6. 81595089
  7. 193600
  8. 78400
  9. 63234304
  10. 5193841
  11. 341056
  12. 131769
  13. 478864
  14. 128881
  15. 3964081
  16. 356409
  17. 94249
  18. 466489
  19. 16384
  20. 829921
  21. 407044
  22. 444889
  23. 605284
  24. 408321
  25. 485809
  26. 34969
  27. 30276
  28. 589824
  29. 81225
  30. 649636
  31. 67081
  32. 21399876
  33. 531441
  34. 839056
  35. 194481
  36. 125316
  37. 247009
  38. 43264
  39. 522729
  40. 133225

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