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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 251 · 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. 1.583² =
  2. 2.649² =
  3. 3.2434² =
  4. 4.983² =
  5. 5.132² =
  6. 6.770² =
  7. 7.277² =
  8. 8.738² =
  9. 9.545² =
  10. 10.154² =
  11. 11.3224² =
  12. 12.1461² =
  13. 13.951² =
  14. 14.770² =
  15. 15.309² =
  16. 16.3478² =
  17. 17.2351² =
  18. 18.595² =
  19. 19.281² =
  20. 20.673² =
  21. 21.624² =
  22. 22.163² =
  23. 23.241² =
  24. 24.153² =
  25. 25.631² =
  26. 26.852² =
  27. 27.290² =
  28. 28.2137² =
  29. 29.396² =
  30. 30.480² =
  31. 31.8733² =
  32. 32.2855² =
  33. 33.160² =
  34. 34.299² =
  35. 35.463² =
  36. 36.219² =
  37. 37.419² =
  38. 38.436² =
  39. 39.226² =
  40. 40.191² =

Answer key

  1. 339889
  2. 421201
  3. 5924356
  4. 966289
  5. 17424
  6. 592900
  7. 76729
  8. 544644
  9. 297025
  10. 23716
  11. 10394176
  12. 2134521
  13. 904401
  14. 592900
  15. 95481
  16. 12096484
  17. 5527201
  18. 354025
  19. 78961
  20. 452929
  21. 389376
  22. 26569
  23. 58081
  24. 23409
  25. 398161
  26. 725904
  27. 84100
  28. 4566769
  29. 156816
  30. 230400
  31. 76265289
  32. 8151025
  33. 25600
  34. 89401
  35. 214369
  36. 47961
  37. 175561
  38. 190096
  39. 51076
  40. 36481

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