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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 809 · 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. 1.7763² =
  2. 2.388² =
  3. 3.933² =
  4. 4.263² =
  5. 5.607² =
  6. 6.250² =
  7. 7.355² =
  8. 8.375² =
  9. 9.138² =
  10. 10.5435² =
  11. 11.145² =
  12. 12.982² =
  13. 13.1839² =
  14. 14.603² =
  15. 15.599² =
  16. 16.213² =
  17. 17.7178² =
  18. 18.594² =
  19. 19.446² =
  20. 20.629² =
  21. 21.675² =
  22. 22.781² =
  23. 23.1803² =
  24. 24.543² =
  25. 25.225² =
  26. 26.2509² =
  27. 27.930² =
  28. 28.582² =
  29. 29.278² =
  30. 30.1893² =
  31. 31.390² =
  32. 32.282² =
  33. 33.143² =
  34. 34.618² =
  35. 35.4751² =
  36. 36.5434² =
  37. 37.681² =
  38. 38.279² =
  39. 39.3082² =
  40. 40.211² =

Answer key

  1. 60264169
  2. 150544
  3. 870489
  4. 69169
  5. 368449
  6. 62500
  7. 126025
  8. 140625
  9. 19044
  10. 29539225
  11. 21025
  12. 964324
  13. 3381921
  14. 363609
  15. 358801
  16. 45369
  17. 51523684
  18. 352836
  19. 198916
  20. 395641
  21. 455625
  22. 609961
  23. 3250809
  24. 294849
  25. 50625
  26. 6295081
  27. 864900
  28. 338724
  29. 77284
  30. 3583449
  31. 152100
  32. 79524
  33. 20449
  34. 381924
  35. 22572001
  36. 29528356
  37. 463761
  38. 77841
  39. 9498724
  40. 44521

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