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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 890 · 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. 1.2743² =
  2. 2.336² =
  3. 3.852² =
  4. 4.721² =
  5. 5.462² =
  6. 6.166² =
  7. 7.3751² =
  8. 8.7103² =
  9. 9.722² =
  10. 10.360² =
  11. 11.9301² =
  12. 12.229² =
  13. 13.832² =
  14. 14.2904² =
  15. 15.449² =
  16. 16.110² =
  17. 17.8383² =
  18. 18.9878² =
  19. 19.443² =
  20. 20.2497² =
  21. 21.845² =
  22. 22.1600² =
  23. 23.6147² =
  24. 24.820² =
  25. 25.251² =
  26. 26.719² =
  27. 27.925² =
  28. 28.135² =
  29. 29.4422² =
  30. 30.2699² =
  31. 31.199² =
  32. 32.769² =
  33. 33.839² =
  34. 34.609² =
  35. 35.2440² =
  36. 36.983² =
  37. 37.643² =
  38. 38.5737² =
  39. 39.495² =
  40. 40.3935² =

Answer key

  1. 7524049
  2. 112896
  3. 725904
  4. 519841
  5. 213444
  6. 27556
  7. 14070001
  8. 50452609
  9. 521284
  10. 129600
  11. 86508601
  12. 52441
  13. 692224
  14. 8433216
  15. 201601
  16. 12100
  17. 70274689
  18. 97574884
  19. 196249
  20. 6235009
  21. 714025
  22. 2560000
  23. 37785609
  24. 672400
  25. 63001
  26. 516961
  27. 855625
  28. 18225
  29. 19554084
  30. 7284601
  31. 39601
  32. 591361
  33. 703921
  34. 370881
  35. 5953600
  36. 966289
  37. 413449
  38. 32913169
  39. 245025
  40. 15484225

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