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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 92 · 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. 1.921² =
  2. 2.936² =
  3. 3.952² =
  4. 4.373² =
  5. 5.5338² =
  6. 6.353² =
  7. 7.8810² =
  8. 8.398² =
  9. 9.180² =
  10. 10.8277² =
  11. 11.446² =
  12. 12.424² =
  13. 13.470² =
  14. 14.769² =
  15. 15.434² =
  16. 16.396² =
  17. 17.843² =
  18. 18.968² =
  19. 19.756² =
  20. 20.9425² =
  21. 21.8614² =
  22. 22.583² =
  23. 23.342² =
  24. 24.211² =
  25. 25.648² =
  26. 26.389² =
  27. 27.832² =
  28. 28.824² =
  29. 29.384² =
  30. 30.9006² =
  31. 31.928² =
  32. 32.2714² =
  33. 33.861² =
  34. 34.8693² =
  35. 35.978² =
  36. 36.878² =
  37. 37.667² =
  38. 38.795² =
  39. 39.1668² =
  40. 40.513² =

Answer key

  1. 848241
  2. 876096
  3. 906304
  4. 139129
  5. 28494244
  6. 124609
  7. 77616100
  8. 158404
  9. 32400
  10. 68508729
  11. 198916
  12. 179776
  13. 220900
  14. 591361
  15. 188356
  16. 156816
  17. 710649
  18. 937024
  19. 571536
  20. 88830625
  21. 74200996
  22. 339889
  23. 116964
  24. 44521
  25. 419904
  26. 151321
  27. 692224
  28. 678976
  29. 147456
  30. 81108036
  31. 861184
  32. 7365796
  33. 741321
  34. 75568249
  35. 956484
  36. 770884
  37. 444889
  38. 632025
  39. 2782224
  40. 263169

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