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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 207 · 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. 1.562² =
  2. 2.917² =
  3. 3.7032² =
  4. 4.527² =
  5. 5.200² =
  6. 6.749² =
  7. 7.308² =
  8. 8.8134² =
  9. 9.470² =
  10. 10.137² =
  11. 11.186² =
  12. 12.9247² =
  13. 13.539² =
  14. 14.388² =
  15. 15.4331² =
  16. 16.359² =
  17. 17.277² =
  18. 18.4512² =
  19. 19.933² =
  20. 20.157² =
  21. 21.3470² =
  22. 22.192² =
  23. 23.501² =
  24. 24.838² =
  25. 25.284² =
  26. 26.975² =
  27. 27.2670² =
  28. 28.6726² =
  29. 29.762² =
  30. 30.3729² =
  31. 31.4162² =
  32. 32.292² =
  33. 33.6130² =
  34. 34.454² =
  35. 35.309² =
  36. 36.5636² =
  37. 37.9709² =
  38. 38.4527² =
  39. 39.824² =
  40. 40.853² =

Answer key

  1. 315844
  2. 840889
  3. 49449024
  4. 277729
  5. 40000
  6. 561001
  7. 94864
  8. 66161956
  9. 220900
  10. 18769
  11. 34596
  12. 85507009
  13. 290521
  14. 150544
  15. 18757561
  16. 128881
  17. 76729
  18. 20358144
  19. 870489
  20. 24649
  21. 12040900
  22. 36864
  23. 251001
  24. 702244
  25. 80656
  26. 950625
  27. 7128900
  28. 45239076
  29. 580644
  30. 13905441
  31. 17322244
  32. 85264
  33. 37576900
  34. 206116
  35. 95481
  36. 31764496
  37. 94264681
  38. 20493729
  39. 678976
  40. 727609

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