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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 209 · 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. 1.2409² =
  2. 2.401² =
  3. 3.459² =
  4. 4.324² =
  5. 5.2423² =
  6. 6.619² =
  7. 7.397² =
  8. 8.531² =
  9. 9.5312² =
  10. 10.313² =
  11. 11.229² =
  12. 12.952² =
  13. 13.852² =
  14. 14.676² =
  15. 15.1920² =
  16. 16.130² =
  17. 17.646² =
  18. 18.3679² =
  19. 19.450² =
  20. 20.340² =
  21. 21.959² =
  22. 22.426² =
  23. 23.8679² =
  24. 24.816² =
  25. 25.428² =
  26. 26.575² =
  27. 27.823² =
  28. 28.795² =
  29. 29.710² =
  30. 30.116² =
  31. 31.6713² =
  32. 32.180² =
  33. 33.868² =
  34. 34.7892² =
  35. 35.395² =
  36. 36.2315² =
  37. 37.934² =
  38. 38.949² =
  39. 39.201² =
  40. 40.950² =

Answer key

  1. 5803281
  2. 160801
  3. 210681
  4. 104976
  5. 5870929
  6. 383161
  7. 157609
  8. 281961
  9. 28217344
  10. 97969
  11. 52441
  12. 906304
  13. 725904
  14. 456976
  15. 3686400
  16. 16900
  17. 417316
  18. 13535041
  19. 202500
  20. 115600
  21. 919681
  22. 181476
  23. 75325041
  24. 665856
  25. 183184
  26. 330625
  27. 677329
  28. 632025
  29. 504100
  30. 13456
  31. 45064369
  32. 32400
  33. 753424
  34. 62283664
  35. 156025
  36. 5359225
  37. 872356
  38. 900601
  39. 40401
  40. 902500

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