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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 347 · 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. 1.962² =
  2. 2.262² =
  3. 3.209² =
  4. 4.120² =
  5. 5.168² =
  6. 6.4592² =
  7. 7.4726² =
  8. 8.310² =
  9. 9.960² =
  10. 10.471² =
  11. 11.578² =
  12. 12.340² =
  13. 13.161² =
  14. 14.733² =
  15. 15.635² =
  16. 16.894² =
  17. 17.592² =
  18. 18.732² =
  19. 19.231² =
  20. 20.939² =
  21. 21.369² =
  22. 22.252² =
  23. 23.6556² =
  24. 24.7335² =
  25. 25.425² =
  26. 26.3737² =
  27. 27.557² =
  28. 28.437² =
  29. 29.265² =
  30. 30.772² =
  31. 31.1546² =
  32. 32.481² =
  33. 33.5923² =
  34. 34.309² =
  35. 35.7491² =
  36. 36.7369² =
  37. 37.625² =
  38. 38.444² =
  39. 39.256² =
  40. 40.745² =

Answer key

  1. 925444
  2. 68644
  3. 43681
  4. 14400
  5. 28224
  6. 21086464
  7. 22335076
  8. 96100
  9. 921600
  10. 221841
  11. 334084
  12. 115600
  13. 25921
  14. 537289
  15. 403225
  16. 799236
  17. 350464
  18. 535824
  19. 53361
  20. 881721
  21. 136161
  22. 63504
  23. 42981136
  24. 53802225
  25. 180625
  26. 13965169
  27. 310249
  28. 190969
  29. 70225
  30. 595984
  31. 2390116
  32. 231361
  33. 35081929
  34. 95481
  35. 56115081
  36. 54302161
  37. 390625
  38. 197136
  39. 65536
  40. 555025

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