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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 442 · 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. 1.628² =
  2. 2.536² =
  3. 3.553² =
  4. 4.662² =
  5. 5.779² =
  6. 6.436² =
  7. 7.750² =
  8. 8.6532² =
  9. 9.315² =
  10. 10.623² =
  11. 11.550² =
  12. 12.1195² =
  13. 13.241² =
  14. 14.3925² =
  15. 15.861² =
  16. 16.592² =
  17. 17.210² =
  18. 18.3254² =
  19. 19.839² =
  20. 20.752² =
  21. 21.270² =
  22. 22.7935² =
  23. 23.258² =
  24. 24.840² =
  25. 25.828² =
  26. 26.289² =
  27. 27.1484² =
  28. 28.2457² =
  29. 29.170² =
  30. 30.3425² =
  31. 31.452² =
  32. 32.757² =
  33. 33.303² =
  34. 34.8664² =
  35. 35.356² =
  36. 36.905² =
  37. 37.388² =
  38. 38.243² =
  39. 39.5987² =
  40. 40.105² =

Answer key

  1. 394384
  2. 287296
  3. 305809
  4. 438244
  5. 606841
  6. 190096
  7. 562500
  8. 42667024
  9. 99225
  10. 388129
  11. 302500
  12. 1428025
  13. 58081
  14. 15405625
  15. 741321
  16. 350464
  17. 44100
  18. 10588516
  19. 703921
  20. 565504
  21. 72900
  22. 62964225
  23. 66564
  24. 705600
  25. 685584
  26. 83521
  27. 2202256
  28. 6036849
  29. 28900
  30. 11730625
  31. 204304
  32. 573049
  33. 91809
  34. 75064896
  35. 126736
  36. 819025
  37. 150544
  38. 59049
  39. 35844169
  40. 11025

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