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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 932 · 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. 1.692² =
  2. 2.566² =
  3. 3.3316² =
  4. 4.353² =
  5. 5.214² =
  6. 6.190² =
  7. 7.813² =
  8. 8.185² =
  9. 9.7860² =
  10. 10.343² =
  11. 11.547² =
  12. 12.258² =
  13. 13.156² =
  14. 14.4347² =
  15. 15.995² =
  16. 16.854² =
  17. 17.719² =
  18. 18.1099² =
  19. 19.784² =
  20. 20.330² =
  21. 21.479² =
  22. 22.846² =
  23. 23.164² =
  24. 24.295² =
  25. 25.324² =
  26. 26.640² =
  27. 27.649² =
  28. 28.155² =
  29. 29.5356² =
  30. 30.1059² =
  31. 31.8822² =
  32. 32.8188² =
  33. 33.224² =
  34. 34.2591² =
  35. 35.581² =
  36. 36.804² =
  37. 37.237² =
  38. 38.219² =
  39. 39.641² =
  40. 40.326² =

Answer key

  1. 478864
  2. 320356
  3. 10995856
  4. 124609
  5. 45796
  6. 36100
  7. 660969
  8. 34225
  9. 61779600
  10. 117649
  11. 299209
  12. 66564
  13. 24336
  14. 18896409
  15. 990025
  16. 729316
  17. 516961
  18. 1207801
  19. 614656
  20. 108900
  21. 229441
  22. 715716
  23. 26896
  24. 87025
  25. 104976
  26. 409600
  27. 421201
  28. 24025
  29. 28686736
  30. 1121481
  31. 77827684
  32. 67043344
  33. 50176
  34. 6713281
  35. 337561
  36. 646416
  37. 56169
  38. 47961
  39. 410881
  40. 106276

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