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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 685 · 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. 1.4740² =
  2. 2.1563² =
  3. 3.7404² =
  4. 4.4333² =
  5. 5.377² =
  6. 6.4853² =
  7. 7.530² =
  8. 8.846² =
  9. 9.544² =
  10. 10.241² =
  11. 11.689² =
  12. 12.154² =
  13. 13.1654² =
  14. 14.913² =
  15. 15.389² =
  16. 16.156² =
  17. 17.8216² =
  18. 18.551² =
  19. 19.459² =
  20. 20.7602² =
  21. 21.210² =
  22. 22.265² =
  23. 23.7619² =
  24. 24.684² =
  25. 25.595² =
  26. 26.6836² =
  27. 27.578² =
  28. 28.346² =
  29. 29.510² =
  30. 30.265² =
  31. 31.253² =
  32. 32.789² =
  33. 33.167² =
  34. 34.261² =
  35. 35.514² =
  36. 36.483² =
  37. 37.190² =
  38. 38.486² =
  39. 39.190² =
  40. 40.772² =

Answer key

  1. 22467600
  2. 2442969
  3. 54819216
  4. 18774889
  5. 142129
  6. 23551609
  7. 280900
  8. 715716
  9. 295936
  10. 58081
  11. 474721
  12. 23716
  13. 2735716
  14. 833569
  15. 151321
  16. 24336
  17. 67502656
  18. 303601
  19. 210681
  20. 57790404
  21. 44100
  22. 70225
  23. 58049161
  24. 467856
  25. 354025
  26. 46730896
  27. 334084
  28. 119716
  29. 260100
  30. 70225
  31. 64009
  32. 622521
  33. 27889
  34. 68121
  35. 264196
  36. 233289
  37. 36100
  38. 236196
  39. 36100
  40. 595984

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