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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 800 · 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. 1.810² =
  2. 2.2226² =
  3. 3.328² =
  4. 4.155² =
  5. 5.5747² =
  6. 6.932² =
  7. 7.933² =
  8. 8.473² =
  9. 9.726² =
  10. 10.116² =
  11. 11.606² =
  12. 12.6740² =
  13. 13.563² =
  14. 14.2877² =
  15. 15.271² =
  16. 16.642² =
  17. 17.8922² =
  18. 18.157² =
  19. 19.169² =
  20. 20.8442² =
  21. 21.740² =
  22. 22.145² =
  23. 23.6525² =
  24. 24.952² =
  25. 25.871² =
  26. 26.6259² =
  27. 27.129² =
  28. 28.363² =
  29. 29.801² =
  30. 30.743² =
  31. 31.863² =
  32. 32.166² =
  33. 33.7029² =
  34. 34.284² =
  35. 35.244² =
  36. 36.5144² =
  37. 37.928² =
  38. 38.604² =
  39. 39.9999² =
  40. 40.1251² =

Answer key

  1. 656100
  2. 4955076
  3. 107584
  4. 24025
  5. 33028009
  6. 868624
  7. 870489
  8. 223729
  9. 527076
  10. 13456
  11. 367236
  12. 45427600
  13. 316969
  14. 8277129
  15. 73441
  16. 412164
  17. 79602084
  18. 24649
  19. 28561
  20. 71267364
  21. 547600
  22. 21025
  23. 42575625
  24. 906304
  25. 758641
  26. 39175081
  27. 16641
  28. 131769
  29. 641601
  30. 552049
  31. 744769
  32. 27556
  33. 49406841
  34. 80656
  35. 59536
  36. 26460736
  37. 861184
  38. 364816
  39. 99980001
  40. 1565001

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