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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 490 · 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. 1.878² =
  2. 2.909² =
  3. 3.2981² =
  4. 4.444² =
  5. 5.268² =
  6. 6.5634² =
  7. 7.205² =
  8. 8.655² =
  9. 9.9396² =
  10. 10.460² =
  11. 11.455² =
  12. 12.308² =
  13. 13.243² =
  14. 14.867² =
  15. 15.794² =
  16. 16.125² =
  17. 17.296² =
  18. 18.2937² =
  19. 19.140² =
  20. 20.299² =
  21. 21.3462² =
  22. 22.440² =
  23. 23.6736² =
  24. 24.353² =
  25. 25.392² =
  26. 26.6881² =
  27. 27.801² =
  28. 28.6755² =
  29. 29.404² =
  30. 30.203² =
  31. 31.195² =
  32. 32.360² =
  33. 33.1894² =
  34. 34.715² =
  35. 35.5814² =
  36. 36.518² =
  37. 37.295² =
  38. 38.4887² =
  39. 39.4133² =
  40. 40.447² =

Answer key

  1. 770884
  2. 826281
  3. 8886361
  4. 197136
  5. 71824
  6. 31741956
  7. 42025
  8. 429025
  9. 88284816
  10. 211600
  11. 207025
  12. 94864
  13. 59049
  14. 751689
  15. 630436
  16. 15625
  17. 87616
  18. 8625969
  19. 19600
  20. 89401
  21. 11985444
  22. 193600
  23. 45373696
  24. 124609
  25. 153664
  26. 47348161
  27. 641601
  28. 45630025
  29. 163216
  30. 41209
  31. 38025
  32. 129600
  33. 3587236
  34. 511225
  35. 33802596
  36. 268324
  37. 87025
  38. 23882769
  39. 17081689
  40. 199809

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