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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 98 · 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. 1.490² =
  2. 2.6533² =
  3. 3.824² =
  4. 4.244² =
  5. 5.839² =
  6. 6.982² =
  7. 7.585² =
  8. 8.970² =
  9. 9.111² =
  10. 10.918² =
  11. 11.385² =
  12. 12.917² =
  13. 13.170² =
  14. 14.538² =
  15. 15.721² =
  16. 16.2643² =
  17. 17.4835² =
  18. 18.587² =
  19. 19.974² =
  20. 20.1924² =
  21. 21.414² =
  22. 22.2763² =
  23. 23.549² =
  24. 24.566² =
  25. 25.241² =
  26. 26.933² =
  27. 27.238² =
  28. 28.923² =
  29. 29.3641² =
  30. 30.783² =
  31. 31.8878² =
  32. 32.9795² =
  33. 33.352² =
  34. 34.837² =
  35. 35.560² =
  36. 36.877² =
  37. 37.519² =
  38. 38.932² =
  39. 39.989² =
  40. 40.323² =

Answer key

  1. 240100
  2. 42680089
  3. 678976
  4. 59536
  5. 703921
  6. 964324
  7. 342225
  8. 940900
  9. 12321
  10. 842724
  11. 148225
  12. 840889
  13. 28900
  14. 289444
  15. 519841
  16. 6985449
  17. 23377225
  18. 344569
  19. 948676
  20. 3701776
  21. 171396
  22. 7634169
  23. 301401
  24. 320356
  25. 58081
  26. 870489
  27. 56644
  28. 851929
  29. 13256881
  30. 613089
  31. 78818884
  32. 95942025
  33. 123904
  34. 700569
  35. 313600
  36. 769129
  37. 269361
  38. 868624
  39. 978121
  40. 104329

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