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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 89 · 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. 1.577² =
  2. 2.900² =
  3. 3.130² =
  4. 4.1426² =
  5. 5.413² =
  6. 6.2151² =
  7. 7.991² =
  8. 8.997² =
  9. 9.473² =
  10. 10.731² =
  11. 11.767² =
  12. 12.928² =
  13. 13.153² =
  14. 14.281² =
  15. 15.989² =
  16. 16.8447² =
  17. 17.756² =
  18. 18.2232² =
  19. 19.349² =
  20. 20.7723² =
  21. 21.588² =
  22. 22.288² =
  23. 23.989² =
  24. 24.742² =
  25. 25.599² =
  26. 26.856² =
  27. 27.669² =
  28. 28.4764² =
  29. 29.436² =
  30. 30.9288² =
  31. 31.2163² =
  32. 32.355² =
  33. 33.542² =
  34. 34.987² =
  35. 35.3380² =
  36. 36.196² =
  37. 37.485² =
  38. 38.794² =
  39. 39.112² =
  40. 40.328² =

Answer key

  1. 332929
  2. 810000
  3. 16900
  4. 2033476
  5. 170569
  6. 4626801
  7. 982081
  8. 994009
  9. 223729
  10. 534361
  11. 588289
  12. 861184
  13. 23409
  14. 78961
  15. 978121
  16. 71351809
  17. 571536
  18. 4981824
  19. 121801
  20. 59644729
  21. 345744
  22. 82944
  23. 978121
  24. 550564
  25. 358801
  26. 732736
  27. 447561
  28. 22695696
  29. 190096
  30. 86266944
  31. 4678569
  32. 126025
  33. 293764
  34. 974169
  35. 11424400
  36. 38416
  37. 235225
  38. 630436
  39. 12544
  40. 107584

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