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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 793 · 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. 1.9052² =
  2. 2.548² =
  3. 3.804² =
  4. 4.791² =
  5. 5.8663² =
  6. 6.241² =
  7. 7.900² =
  8. 8.547² =
  9. 9.515² =
  10. 10.455² =
  11. 11.317² =
  12. 12.982² =
  13. 13.986² =
  14. 14.294² =
  15. 15.418² =
  16. 16.7100² =
  17. 17.561² =
  18. 18.608² =
  19. 19.8947² =
  20. 20.722² =
  21. 21.855² =
  22. 22.688² =
  23. 23.423² =
  24. 24.255² =
  25. 25.7353² =
  26. 26.256² =
  27. 27.7057² =
  28. 28.359² =
  29. 29.431² =
  30. 30.4891² =
  31. 31.754² =
  32. 32.999² =
  33. 33.462² =
  34. 34.607² =
  35. 35.4849² =
  36. 36.536² =
  37. 37.9612² =
  38. 38.655² =
  39. 39.635² =
  40. 40.678² =

Answer key

  1. 81938704
  2. 300304
  3. 646416
  4. 625681
  5. 75047569
  6. 58081
  7. 810000
  8. 299209
  9. 265225
  10. 207025
  11. 100489
  12. 964324
  13. 972196
  14. 86436
  15. 174724
  16. 50410000
  17. 314721
  18. 369664
  19. 80048809
  20. 521284
  21. 731025
  22. 473344
  23. 178929
  24. 65025
  25. 54066609
  26. 65536
  27. 49801249
  28. 128881
  29. 185761
  30. 23921881
  31. 568516
  32. 998001
  33. 213444
  34. 368449
  35. 23512801
  36. 287296
  37. 92390544
  38. 429025
  39. 403225
  40. 459684

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