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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 580 · 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. 1.932² =
  2. 2.6610² =
  3. 3.243² =
  4. 4.8167² =
  5. 5.9528² =
  6. 6.285² =
  7. 7.952² =
  8. 8.587² =
  9. 9.982² =
  10. 10.311² =
  11. 11.249² =
  12. 12.4485² =
  13. 13.631² =
  14. 14.389² =
  15. 15.134² =
  16. 16.831² =
  17. 17.720² =
  18. 18.180² =
  19. 19.713² =
  20. 20.3323² =
  21. 21.8752² =
  22. 22.301² =
  23. 23.721² =
  24. 24.1115² =
  25. 25.472² =
  26. 26.120² =
  27. 27.563² =
  28. 28.9332² =
  29. 29.894² =
  30. 30.6177² =
  31. 31.4861² =
  32. 32.7427² =
  33. 33.287² =
  34. 34.827² =
  35. 35.546² =
  36. 36.269² =
  37. 37.3726² =
  38. 38.922² =
  39. 39.940² =
  40. 40.564² =

Answer key

  1. 868624
  2. 43692100
  3. 59049
  4. 66699889
  5. 90782784
  6. 81225
  7. 906304
  8. 344569
  9. 964324
  10. 96721
  11. 62001
  12. 20115225
  13. 398161
  14. 151321
  15. 17956
  16. 690561
  17. 518400
  18. 32400
  19. 508369
  20. 11042329
  21. 76597504
  22. 90601
  23. 519841
  24. 1243225
  25. 222784
  26. 14400
  27. 316969
  28. 87086224
  29. 799236
  30. 38155329
  31. 23629321
  32. 55160329
  33. 82369
  34. 683929
  35. 298116
  36. 72361
  37. 13883076
  38. 850084
  39. 883600
  40. 318096

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