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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 309 · 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. 1.312² =
  2. 2.591² =
  3. 3.3537² =
  4. 4.349² =
  5. 5.1205² =
  6. 6.1237² =
  7. 7.630² =
  8. 8.6664² =
  9. 9.2996² =
  10. 10.185² =
  11. 11.8090² =
  12. 12.309² =
  13. 13.9434² =
  14. 14.615² =
  15. 15.616² =
  16. 16.893² =
  17. 17.455² =
  18. 18.622² =
  19. 19.198² =
  20. 20.2904² =
  21. 21.372² =
  22. 22.8181² =
  23. 23.420² =
  24. 24.204² =
  25. 25.6441² =
  26. 26.1664² =
  27. 27.297² =
  28. 28.7300² =
  29. 29.185² =
  30. 30.207² =
  31. 31.653² =
  32. 32.6153² =
  33. 33.525² =
  34. 34.4444² =
  35. 35.574² =
  36. 36.529² =
  37. 37.370² =
  38. 38.219² =
  39. 39.501² =
  40. 40.909² =

Answer key

  1. 97344
  2. 349281
  3. 12510369
  4. 121801
  5. 1452025
  6. 1530169
  7. 396900
  8. 44408896
  9. 8976016
  10. 34225
  11. 65448100
  12. 95481
  13. 89000356
  14. 378225
  15. 379456
  16. 797449
  17. 207025
  18. 386884
  19. 39204
  20. 8433216
  21. 138384
  22. 66928761
  23. 176400
  24. 41616
  25. 41486481
  26. 2768896
  27. 88209
  28. 53290000
  29. 34225
  30. 42849
  31. 426409
  32. 37859409
  33. 275625
  34. 19749136
  35. 329476
  36. 279841
  37. 136900
  38. 47961
  39. 251001
  40. 826281

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