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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 403 · 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. 1.4972² =
  2. 2.7910² =
  3. 3.440² =
  4. 4.863² =
  5. 5.153² =
  6. 6.983² =
  7. 7.269² =
  8. 8.157² =
  9. 9.857² =
  10. 10.2209² =
  11. 11.788² =
  12. 12.8793² =
  13. 13.753² =
  14. 14.673² =
  15. 15.182² =
  16. 16.6525² =
  17. 17.130² =
  18. 18.809² =
  19. 19.1997² =
  20. 20.580² =
  21. 21.7844² =
  22. 22.244² =
  23. 23.866² =
  24. 24.567² =
  25. 25.170² =
  26. 26.6479² =
  27. 27.918² =
  28. 28.334² =
  29. 29.5534² =
  30. 30.2869² =
  31. 31.449² =
  32. 32.2207² =
  33. 33.804² =
  34. 34.662² =
  35. 35.690² =
  36. 36.564² =
  37. 37.746² =
  38. 38.102² =
  39. 39.603² =
  40. 40.510² =

Answer key

  1. 24720784
  2. 62568100
  3. 193600
  4. 744769
  5. 23409
  6. 966289
  7. 72361
  8. 24649
  9. 734449
  10. 4879681
  11. 620944
  12. 77316849
  13. 567009
  14. 452929
  15. 33124
  16. 42575625
  17. 16900
  18. 654481
  19. 3988009
  20. 336400
  21. 61528336
  22. 59536
  23. 749956
  24. 321489
  25. 28900
  26. 41977441
  27. 842724
  28. 111556
  29. 30625156
  30. 8231161
  31. 201601
  32. 4870849
  33. 646416
  34. 438244
  35. 476100
  36. 318096
  37. 556516
  38. 10404
  39. 363609
  40. 260100

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