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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 219 · 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. 1.9049² =
  2. 2.390² =
  3. 3.833² =
  4. 4.7232² =
  5. 5.433² =
  6. 6.231² =
  7. 7.6477² =
  8. 8.558² =
  9. 9.6075² =
  10. 10.9485² =
  11. 11.756² =
  12. 12.591² =
  13. 13.516² =
  14. 14.642² =
  15. 15.6348² =
  16. 16.3608² =
  17. 17.903² =
  18. 18.986² =
  19. 19.669² =
  20. 20.551² =
  21. 21.178² =
  22. 22.563² =
  23. 23.805² =
  24. 24.1377² =
  25. 25.2655² =
  26. 26.466² =
  27. 27.170² =
  28. 28.145² =
  29. 29.4044² =
  30. 30.888² =
  31. 31.900² =
  32. 32.8385² =
  33. 33.552² =
  34. 34.208² =
  35. 35.294² =
  36. 36.4981² =
  37. 37.538² =
  38. 38.650² =
  39. 39.175² =
  40. 40.7717² =

Answer key

  1. 81884401
  2. 152100
  3. 693889
  4. 52301824
  5. 187489
  6. 53361
  7. 41951529
  8. 311364
  9. 36905625
  10. 89965225
  11. 571536
  12. 349281
  13. 266256
  14. 412164
  15. 40297104
  16. 13017664
  17. 815409
  18. 972196
  19. 447561
  20. 303601
  21. 31684
  22. 316969
  23. 648025
  24. 1896129
  25. 7049025
  26. 217156
  27. 28900
  28. 21025
  29. 16353936
  30. 788544
  31. 810000
  32. 70308225
  33. 304704
  34. 43264
  35. 86436
  36. 24810361
  37. 289444
  38. 422500
  39. 30625
  40. 59552089

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