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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 656 · 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. 1.7847² =
  2. 2.283² =
  3. 3.495² =
  4. 4.118² =
  5. 5.3636² =
  6. 6.1309² =
  7. 7.952² =
  8. 8.8485² =
  9. 9.845² =
  10. 10.198² =
  11. 11.501² =
  12. 12.771² =
  13. 13.542² =
  14. 14.691² =
  15. 15.3770² =
  16. 16.237² =
  17. 17.242² =
  18. 18.6278² =
  19. 19.740² =
  20. 20.522² =
  21. 21.892² =
  22. 22.4100² =
  23. 23.5570² =
  24. 24.365² =
  25. 25.446² =
  26. 26.115² =
  27. 27.268² =
  28. 28.983² =
  29. 29.5411² =
  30. 30.149² =
  31. 31.7831² =
  32. 32.923² =
  33. 33.5365² =
  34. 34.238² =
  35. 35.570² =
  36. 36.5561² =
  37. 37.998² =
  38. 38.754² =
  39. 39.1928² =
  40. 40.678² =

Answer key

  1. 61575409
  2. 80089
  3. 245025
  4. 13924
  5. 13220496
  6. 1713481
  7. 906304
  8. 71995225
  9. 714025
  10. 39204
  11. 251001
  12. 594441
  13. 293764
  14. 477481
  15. 14212900
  16. 56169
  17. 58564
  18. 39413284
  19. 547600
  20. 272484
  21. 795664
  22. 16810000
  23. 31024900
  24. 133225
  25. 198916
  26. 13225
  27. 71824
  28. 966289
  29. 29278921
  30. 22201
  31. 61324561
  32. 851929
  33. 28783225
  34. 56644
  35. 324900
  36. 30924721
  37. 996004
  38. 568516
  39. 3717184
  40. 459684

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