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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 840 · 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. 1.1674² =
  2. 2.130² =
  3. 3.306² =
  4. 4.480² =
  5. 5.896² =
  6. 6.7882² =
  7. 7.687² =
  8. 8.348² =
  9. 9.6052² =
  10. 10.750² =
  11. 11.148² =
  12. 12.883² =
  13. 13.548² =
  14. 14.710² =
  15. 15.781² =
  16. 16.450² =
  17. 17.253² =
  18. 18.565² =
  19. 19.503² =
  20. 20.318² =
  21. 21.6999² =
  22. 22.817² =
  23. 23.952² =
  24. 24.127² =
  25. 25.607² =
  26. 26.810² =
  27. 27.2710² =
  28. 28.134² =
  29. 29.738² =
  30. 30.924² =
  31. 31.310² =
  32. 32.152² =
  33. 33.7782² =
  34. 34.455² =
  35. 35.489² =
  36. 36.656² =
  37. 37.167² =
  38. 38.9731² =
  39. 39.561² =
  40. 40.598² =

Answer key

  1. 2802276
  2. 16900
  3. 93636
  4. 230400
  5. 802816
  6. 62125924
  7. 471969
  8. 121104
  9. 36626704
  10. 562500
  11. 21904
  12. 779689
  13. 300304
  14. 504100
  15. 609961
  16. 202500
  17. 64009
  18. 319225
  19. 253009
  20. 101124
  21. 48986001
  22. 667489
  23. 906304
  24. 16129
  25. 368449
  26. 656100
  27. 7344100
  28. 17956
  29. 544644
  30. 853776
  31. 96100
  32. 23104
  33. 60559524
  34. 207025
  35. 239121
  36. 430336
  37. 27889
  38. 94692361
  39. 314721
  40. 357604

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