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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 616 · 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. 1.238² =
  2. 2.784² =
  3. 3.7317² =
  4. 4.355² =
  5. 5.370² =
  6. 6.548² =
  7. 7.4744² =
  8. 8.242² =
  9. 9.918² =
  10. 10.295² =
  11. 11.3430² =
  12. 12.388² =
  13. 13.5913² =
  14. 14.111² =
  15. 15.170² =
  16. 16.5864² =
  17. 17.6293² =
  18. 18.8479² =
  19. 19.982² =
  20. 20.829² =
  21. 21.501² =
  22. 22.669² =
  23. 23.313² =
  24. 24.134² =
  25. 25.937² =
  26. 26.828² =
  27. 27.464² =
  28. 28.3420² =
  29. 29.927² =
  30. 30.687² =
  31. 31.552² =
  32. 32.254² =
  33. 33.991² =
  34. 34.620² =
  35. 35.420² =
  36. 36.677² =
  37. 37.678² =
  38. 38.183² =
  39. 39.661² =
  40. 40.800² =

Answer key

  1. 56644
  2. 614656
  3. 53538489
  4. 126025
  5. 136900
  6. 300304
  7. 22505536
  8. 58564
  9. 842724
  10. 87025
  11. 11764900
  12. 150544
  13. 34963569
  14. 12321
  15. 28900
  16. 34386496
  17. 39601849
  18. 71893441
  19. 964324
  20. 687241
  21. 251001
  22. 447561
  23. 97969
  24. 17956
  25. 877969
  26. 685584
  27. 215296
  28. 11696400
  29. 859329
  30. 471969
  31. 304704
  32. 64516
  33. 982081
  34. 384400
  35. 176400
  36. 458329
  37. 459684
  38. 33489
  39. 436921
  40. 640000

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