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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 88 · 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. 1.698² =
  2. 2.1306² =
  3. 3.621² =
  4. 4.115² =
  5. 5.285² =
  6. 6.434² =
  7. 7.166² =
  8. 8.979² =
  9. 9.444² =
  10. 10.6288² =
  11. 11.487² =
  12. 12.575² =
  13. 13.457² =
  14. 14.5963² =
  15. 15.771² =
  16. 16.416² =
  17. 17.439² =
  18. 18.520² =
  19. 19.685² =
  20. 20.637² =
  21. 21.185² =
  22. 22.801² =
  23. 23.311² =
  24. 24.156² =
  25. 25.9084² =
  26. 26.145² =
  27. 27.791² =
  28. 28.419² =
  29. 29.199² =
  30. 30.6121² =
  31. 31.6671² =
  32. 32.328² =
  33. 33.4006² =
  34. 34.923² =
  35. 35.422² =
  36. 36.2638² =
  37. 37.486² =
  38. 38.780² =
  39. 39.459² =
  40. 40.269² =

Answer key

  1. 487204
  2. 1705636
  3. 385641
  4. 13225
  5. 81225
  6. 188356
  7. 27556
  8. 958441
  9. 197136
  10. 39538944
  11. 237169
  12. 330625
  13. 208849
  14. 35557369
  15. 594441
  16. 173056
  17. 192721
  18. 270400
  19. 469225
  20. 405769
  21. 34225
  22. 641601
  23. 96721
  24. 24336
  25. 82519056
  26. 21025
  27. 625681
  28. 175561
  29. 39601
  30. 37466641
  31. 44502241
  32. 107584
  33. 16048036
  34. 851929
  35. 178084
  36. 6959044
  37. 236196
  38. 608400
  39. 210681
  40. 72361

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