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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 826 · 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. 1.304² =
  2. 2.1721² =
  3. 3.345² =
  4. 4.245² =
  5. 5.7258² =
  6. 6.779² =
  7. 7.752² =
  8. 8.9914² =
  9. 9.390² =
  10. 10.481² =
  11. 11.538² =
  12. 12.683² =
  13. 13.704² =
  14. 14.395² =
  15. 15.130² =
  16. 16.668² =
  17. 17.961² =
  18. 18.949² =
  19. 19.5341² =
  20. 20.115² =
  21. 21.759² =
  22. 22.259² =
  23. 23.939² =
  24. 24.886² =
  25. 25.107² =
  26. 26.898² =
  27. 27.844² =
  28. 28.344² =
  29. 29.560² =
  30. 30.556² =
  31. 31.817² =
  32. 32.198² =
  33. 33.510² =
  34. 34.226² =
  35. 35.3955² =
  36. 36.587² =
  37. 37.2730² =
  38. 38.5262² =
  39. 39.3307² =
  40. 40.881² =

Answer key

  1. 92416
  2. 2961841
  3. 119025
  4. 60025
  5. 52678564
  6. 606841
  7. 565504
  8. 98287396
  9. 152100
  10. 231361
  11. 289444
  12. 466489
  13. 495616
  14. 156025
  15. 16900
  16. 446224
  17. 923521
  18. 900601
  19. 28526281
  20. 13225
  21. 576081
  22. 67081
  23. 881721
  24. 784996
  25. 11449
  26. 806404
  27. 712336
  28. 118336
  29. 313600
  30. 309136
  31. 667489
  32. 39204
  33. 260100
  34. 51076
  35. 15642025
  36. 344569
  37. 7452900
  38. 27688644
  39. 10936249
  40. 776161

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