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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 36 · 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. 1.4669² =
  2. 2.6232² =
  3. 3.309² =
  4. 4.860² =
  5. 5.6423² =
  6. 6.387² =
  7. 7.636² =
  8. 8.5359² =
  9. 9.536² =
  10. 10.266² =
  11. 11.8778² =
  12. 12.3362² =
  13. 13.185² =
  14. 14.533² =
  15. 15.762² =
  16. 16.385² =
  17. 17.272² =
  18. 18.917² =
  19. 19.669² =
  20. 20.572² =
  21. 21.225² =
  22. 22.276² =
  23. 23.2490² =
  24. 24.661² =
  25. 25.961² =
  26. 26.727² =
  27. 27.340² =
  28. 28.5428² =
  29. 29.2311² =
  30. 30.6282² =
  31. 31.474² =
  32. 32.873² =
  33. 33.9005² =
  34. 34.418² =
  35. 35.1209² =
  36. 36.651² =
  37. 37.463² =
  38. 38.785² =
  39. 39.774² =
  40. 40.6664² =

Answer key

  1. 21799561
  2. 38837824
  3. 95481
  4. 739600
  5. 41254929
  6. 149769
  7. 404496
  8. 28718881
  9. 287296
  10. 70756
  11. 77053284
  12. 11303044
  13. 34225
  14. 284089
  15. 580644
  16. 148225
  17. 73984
  18. 840889
  19. 447561
  20. 327184
  21. 50625
  22. 76176
  23. 6200100
  24. 436921
  25. 923521
  26. 528529
  27. 115600
  28. 29463184
  29. 5340721
  30. 39463524
  31. 224676
  32. 762129
  33. 81090025
  34. 174724
  35. 1461681
  36. 423801
  37. 214369
  38. 616225
  39. 599076
  40. 44408896

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