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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 330 · 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. 1.711² =
  2. 2.443² =
  3. 3.376² =
  4. 4.331² =
  5. 5.301² =
  6. 6.3596² =
  7. 7.698² =
  8. 8.131² =
  9. 9.2181² =
  10. 10.258² =
  11. 11.3900² =
  12. 12.6588² =
  13. 13.718² =
  14. 14.8331² =
  15. 15.8244² =
  16. 16.683² =
  17. 17.374² =
  18. 18.7753² =
  19. 19.246² =
  20. 20.480² =
  21. 21.1708² =
  22. 22.299² =
  23. 23.779² =
  24. 24.716² =
  25. 25.767² =
  26. 26.172² =
  27. 27.698² =
  28. 28.229² =
  29. 29.469² =
  30. 30.6390² =
  31. 31.226² =
  32. 32.560² =
  33. 33.293² =
  34. 34.135² =
  35. 35.133² =
  36. 36.731² =
  37. 37.359² =
  38. 38.841² =
  39. 39.540² =
  40. 40.275² =

Answer key

  1. 505521
  2. 196249
  3. 141376
  4. 109561
  5. 90601
  6. 12931216
  7. 487204
  8. 17161
  9. 4756761
  10. 66564
  11. 15210000
  12. 43401744
  13. 515524
  14. 69405561
  15. 67963536
  16. 466489
  17. 139876
  18. 60109009
  19. 60516
  20. 230400
  21. 2917264
  22. 89401
  23. 606841
  24. 512656
  25. 588289
  26. 29584
  27. 487204
  28. 52441
  29. 219961
  30. 40832100
  31. 51076
  32. 313600
  33. 85849
  34. 18225
  35. 17689
  36. 534361
  37. 128881
  38. 707281
  39. 291600
  40. 75625

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