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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 956 · 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. 1.716² =
  2. 2.309² =
  3. 3.454² =
  4. 4.467² =
  5. 5.743² =
  6. 6.560² =
  7. 7.859² =
  8. 8.679² =
  9. 9.267² =
  10. 10.672² =
  11. 11.974² =
  12. 12.286² =
  13. 13.1220² =
  14. 14.254² =
  15. 15.702² =
  16. 16.702² =
  17. 17.103² =
  18. 18.4655² =
  19. 19.720² =
  20. 20.398² =
  21. 21.324² =
  22. 22.1270² =
  23. 23.196² =
  24. 24.867² =
  25. 25.980² =
  26. 26.889² =
  27. 27.393² =
  28. 28.2334² =
  29. 29.145² =
  30. 30.928² =
  31. 31.182² =
  32. 32.588² =
  33. 33.1701² =
  34. 34.437² =
  35. 35.213² =
  36. 36.6675² =
  37. 37.697² =
  38. 38.876² =
  39. 39.2628² =
  40. 40.2817² =

Answer key

  1. 512656
  2. 95481
  3. 206116
  4. 218089
  5. 552049
  6. 313600
  7. 737881
  8. 461041
  9. 71289
  10. 451584
  11. 948676
  12. 81796
  13. 1488400
  14. 64516
  15. 492804
  16. 492804
  17. 10609
  18. 21669025
  19. 518400
  20. 158404
  21. 104976
  22. 1612900
  23. 38416
  24. 751689
  25. 960400
  26. 790321
  27. 154449
  28. 5447556
  29. 21025
  30. 861184
  31. 33124
  32. 345744
  33. 2893401
  34. 190969
  35. 45369
  36. 44555625
  37. 485809
  38. 767376
  39. 6906384
  40. 7935489

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