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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 358 · 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. 1.9653² =
  2. 2.229² =
  3. 3.6821² =
  4. 4.592² =
  5. 5.906² =
  6. 6.844² =
  7. 7.517² =
  8. 8.463² =
  9. 9.210² =
  10. 10.369² =
  11. 11.4833² =
  12. 12.2610² =
  13. 13.7510² =
  14. 14.453² =
  15. 15.311² =
  16. 16.455² =
  17. 17.536² =
  18. 18.691² =
  19. 19.518² =
  20. 20.131² =
  21. 21.769² =
  22. 22.424² =
  23. 23.8248² =
  24. 24.142² =
  25. 25.379² =
  26. 26.181² =
  27. 27.862² =
  28. 28.215² =
  29. 29.421² =
  30. 30.682² =
  31. 31.503² =
  32. 32.261² =
  33. 33.572² =
  34. 34.7918² =
  35. 35.430² =
  36. 36.155² =
  37. 37.863² =
  38. 38.854² =
  39. 39.441² =
  40. 40.438² =

Answer key

  1. 93180409
  2. 52441
  3. 46526041
  4. 350464
  5. 820836
  6. 712336
  7. 267289
  8. 214369
  9. 44100
  10. 136161
  11. 23357889
  12. 6812100
  13. 56400100
  14. 205209
  15. 96721
  16. 207025
  17. 287296
  18. 477481
  19. 268324
  20. 17161
  21. 591361
  22. 179776
  23. 68029504
  24. 20164
  25. 143641
  26. 32761
  27. 743044
  28. 46225
  29. 177241
  30. 465124
  31. 253009
  32. 68121
  33. 327184
  34. 62694724
  35. 184900
  36. 24025
  37. 744769
  38. 729316
  39. 194481
  40. 191844

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