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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 853 · 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. 1.464² =
  2. 2.299² =
  3. 3.973² =
  4. 4.191² =
  5. 5.5417² =
  6. 6.837² =
  7. 7.676² =
  8. 8.940² =
  9. 9.1824² =
  10. 10.845² =
  11. 11.544² =
  12. 12.7331² =
  13. 13.3398² =
  14. 14.4332² =
  15. 15.837² =
  16. 16.195² =
  17. 17.140² =
  18. 18.4708² =
  19. 19.448² =
  20. 20.438² =
  21. 21.875² =
  22. 22.500² =
  23. 23.5717² =
  24. 24.8189² =
  25. 25.721² =
  26. 26.504² =
  27. 27.5845² =
  28. 28.357² =
  29. 29.689² =
  30. 30.215² =
  31. 31.505² =
  32. 32.703² =
  33. 33.331² =
  34. 34.210² =
  35. 35.316² =
  36. 36.697² =
  37. 37.959² =
  38. 38.367² =
  39. 39.990² =
  40. 40.470² =

Answer key

  1. 215296
  2. 89401
  3. 946729
  4. 36481
  5. 29343889
  6. 700569
  7. 456976
  8. 883600
  9. 3326976
  10. 714025
  11. 295936
  12. 53743561
  13. 11546404
  14. 18766224
  15. 700569
  16. 38025
  17. 19600
  18. 22165264
  19. 200704
  20. 191844
  21. 765625
  22. 250000
  23. 32684089
  24. 67059721
  25. 519841
  26. 254016
  27. 34164025
  28. 127449
  29. 474721
  30. 46225
  31. 255025
  32. 494209
  33. 109561
  34. 44100
  35. 99856
  36. 485809
  37. 919681
  38. 134689
  39. 980100
  40. 220900

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