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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 272 · 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. 1.312² =
  2. 2.614² =
  3. 3.673² =
  4. 4.539² =
  5. 5.104² =
  6. 6.337² =
  7. 7.868² =
  8. 8.700² =
  9. 9.715² =
  10. 10.9522² =
  11. 11.210² =
  12. 12.665² =
  13. 13.684² =
  14. 14.626² =
  15. 15.716² =
  16. 16.806² =
  17. 17.109² =
  18. 18.474² =
  19. 19.7928² =
  20. 20.981² =
  21. 21.259² =
  22. 22.479² =
  23. 23.359² =
  24. 24.781² =
  25. 25.599² =
  26. 26.298² =
  27. 27.917² =
  28. 28.141² =
  29. 29.726² =
  30. 30.953² =
  31. 31.4026² =
  32. 32.111² =
  33. 33.973² =
  34. 34.5634² =
  35. 35.262² =
  36. 36.903² =
  37. 37.501² =
  38. 38.7016² =
  39. 39.467² =
  40. 40.4306² =

Answer key

  1. 97344
  2. 376996
  3. 452929
  4. 290521
  5. 10816
  6. 113569
  7. 753424
  8. 490000
  9. 511225
  10. 90668484
  11. 44100
  12. 442225
  13. 467856
  14. 391876
  15. 512656
  16. 649636
  17. 11881
  18. 224676
  19. 62853184
  20. 962361
  21. 67081
  22. 229441
  23. 128881
  24. 609961
  25. 358801
  26. 88804
  27. 840889
  28. 19881
  29. 527076
  30. 908209
  31. 16208676
  32. 12321
  33. 946729
  34. 31741956
  35. 68644
  36. 815409
  37. 251001
  38. 49224256
  39. 218089
  40. 18541636

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