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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 797 · 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. 1.655² =
  2. 2.695² =
  3. 3.347² =
  4. 4.869² =
  5. 5.1274² =
  6. 6.2584² =
  7. 7.626² =
  8. 8.127² =
  9. 9.2654² =
  10. 10.858² =
  11. 11.9104² =
  12. 12.924² =
  13. 13.263² =
  14. 14.269² =
  15. 15.2934² =
  16. 16.863² =
  17. 17.413² =
  18. 18.117² =
  19. 19.437² =
  20. 20.725² =
  21. 21.738² =
  22. 22.972² =
  23. 23.487² =
  24. 24.149² =
  25. 25.931² =
  26. 26.381² =
  27. 27.290² =
  28. 28.962² =
  29. 29.707² =
  30. 30.595² =
  31. 31.734² =
  32. 32.6053² =
  33. 33.3478² =
  34. 34.2447² =
  35. 35.382² =
  36. 36.753² =
  37. 37.7469² =
  38. 38.147² =
  39. 39.104² =
  40. 40.677² =

Answer key

  1. 429025
  2. 483025
  3. 120409
  4. 755161
  5. 1623076
  6. 6677056
  7. 391876
  8. 16129
  9. 7043716
  10. 736164
  11. 82882816
  12. 853776
  13. 69169
  14. 72361
  15. 8608356
  16. 744769
  17. 170569
  18. 13689
  19. 190969
  20. 525625
  21. 544644
  22. 944784
  23. 237169
  24. 22201
  25. 866761
  26. 145161
  27. 84100
  28. 925444
  29. 499849
  30. 354025
  31. 538756
  32. 36638809
  33. 12096484
  34. 5987809
  35. 145924
  36. 567009
  37. 55785961
  38. 21609
  39. 10816
  40. 458329

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