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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 305 · 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. 1.407² =
  2. 2.6110² =
  3. 3.327² =
  4. 4.471² =
  5. 5.3324² =
  6. 6.7967² =
  7. 7.885² =
  8. 8.3801² =
  9. 9.2162² =
  10. 10.3643² =
  11. 11.703² =
  12. 12.361² =
  13. 13.880² =
  14. 14.6389² =
  15. 15.727² =
  16. 16.199² =
  17. 17.1797² =
  18. 18.1398² =
  19. 19.9751² =
  20. 20.405² =
  21. 21.410² =
  22. 22.223² =
  23. 23.373² =
  24. 24.2719² =
  25. 25.545² =
  26. 26.806² =
  27. 27.352² =
  28. 28.736² =
  29. 29.315² =
  30. 30.878² =
  31. 31.293² =
  32. 32.1982² =
  33. 33.7930² =
  34. 34.826² =
  35. 35.6193² =
  36. 36.277² =
  37. 37.940² =
  38. 38.538² =
  39. 39.120² =
  40. 40.868² =

Answer key

  1. 165649
  2. 37332100
  3. 106929
  4. 221841
  5. 11048976
  6. 63473089
  7. 783225
  8. 14447601
  9. 4674244
  10. 13271449
  11. 494209
  12. 130321
  13. 774400
  14. 40819321
  15. 528529
  16. 39601
  17. 3229209
  18. 1954404
  19. 95082001
  20. 164025
  21. 168100
  22. 49729
  23. 139129
  24. 7392961
  25. 297025
  26. 649636
  27. 123904
  28. 541696
  29. 99225
  30. 770884
  31. 85849
  32. 3928324
  33. 62884900
  34. 682276
  35. 38353249
  36. 76729
  37. 883600
  38. 289444
  39. 14400
  40. 753424

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