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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 200 · 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. 1.876² =
  2. 2.458² =
  3. 3.285² =
  4. 4.616² =
  5. 5.348² =
  6. 6.223² =
  7. 7.500² =
  8. 8.975² =
  9. 9.993² =
  10. 10.7511² =
  11. 11.1259² =
  12. 12.957² =
  13. 13.7509² =
  14. 14.313² =
  15. 15.1366² =
  16. 16.393² =
  17. 17.411² =
  18. 18.219² =
  19. 19.822² =
  20. 20.3103² =
  21. 21.223² =
  22. 22.884² =
  23. 23.758² =
  24. 24.323² =
  25. 25.238² =
  26. 26.542² =
  27. 27.569² =
  28. 28.3927² =
  29. 29.550² =
  30. 30.237² =
  31. 31.755² =
  32. 32.343² =
  33. 33.156² =
  34. 34.923² =
  35. 35.3029² =
  36. 36.109² =
  37. 37.1789² =
  38. 38.7755² =
  39. 39.248² =
  40. 40.8783² =

Answer key

  1. 767376
  2. 209764
  3. 81225
  4. 379456
  5. 121104
  6. 49729
  7. 250000
  8. 950625
  9. 986049
  10. 56415121
  11. 1585081
  12. 915849
  13. 56385081
  14. 97969
  15. 1865956
  16. 154449
  17. 168921
  18. 47961
  19. 675684
  20. 9628609
  21. 49729
  22. 781456
  23. 574564
  24. 104329
  25. 56644
  26. 293764
  27. 323761
  28. 15421329
  29. 302500
  30. 56169
  31. 570025
  32. 117649
  33. 24336
  34. 851929
  35. 9174841
  36. 11881
  37. 3200521
  38. 60140025
  39. 61504
  40. 77141089

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