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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 252 · 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. 1.460² =
  2. 2.763² =
  3. 3.5778² =
  4. 4.698² =
  5. 5.560² =
  6. 6.9931² =
  7. 7.862² =
  8. 8.329² =
  9. 9.423² =
  10. 10.999² =
  11. 11.391² =
  12. 12.181² =
  13. 13.3799² =
  14. 14.7322² =
  15. 15.868² =
  16. 16.288² =
  17. 17.519² =
  18. 18.221² =
  19. 19.7110² =
  20. 20.872² =
  21. 21.237² =
  22. 22.244² =
  23. 23.739² =
  24. 24.311² =
  25. 25.394² =
  26. 26.7385² =
  27. 27.733² =
  28. 28.396² =
  29. 29.597² =
  30. 30.3302² =
  31. 31.9293² =
  32. 32.708² =
  33. 33.335² =
  34. 34.265² =
  35. 35.182² =
  36. 36.536² =
  37. 37.572² =
  38. 38.507² =
  39. 39.1762² =
  40. 40.186² =

Answer key

  1. 211600
  2. 582169
  3. 33385284
  4. 487204
  5. 313600
  6. 98624761
  7. 743044
  8. 108241
  9. 178929
  10. 998001
  11. 152881
  12. 32761
  13. 14432401
  14. 53611684
  15. 753424
  16. 82944
  17. 269361
  18. 48841
  19. 50552100
  20. 760384
  21. 56169
  22. 59536
  23. 546121
  24. 96721
  25. 155236
  26. 54538225
  27. 537289
  28. 156816
  29. 356409
  30. 10903204
  31. 86359849
  32. 501264
  33. 112225
  34. 70225
  35. 33124
  36. 287296
  37. 327184
  38. 257049
  39. 3104644
  40. 34596

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