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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 638 · 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. 1.832² =
  2. 2.8412² =
  3. 3.688² =
  4. 4.296² =
  5. 5.805² =
  6. 6.452² =
  7. 7.253² =
  8. 8.693² =
  9. 9.8561² =
  10. 10.343² =
  11. 11.711² =
  12. 12.548² =
  13. 13.581² =
  14. 14.942² =
  15. 15.383² =
  16. 16.255² =
  17. 17.599² =
  18. 18.680² =
  19. 19.998² =
  20. 20.8819² =
  21. 21.9684² =
  22. 22.9499² =
  23. 23.153² =
  24. 24.650² =
  25. 25.982² =
  26. 26.5141² =
  27. 27.794² =
  28. 28.776² =
  29. 29.6651² =
  30. 30.308² =
  31. 31.7255² =
  32. 32.624² =
  33. 33.266² =
  34. 34.9021² =
  35. 35.548² =
  36. 36.902² =
  37. 37.258² =
  38. 38.558² =
  39. 39.827² =
  40. 40.464² =

Answer key

  1. 692224
  2. 70761744
  3. 473344
  4. 87616
  5. 648025
  6. 204304
  7. 64009
  8. 480249
  9. 73290721
  10. 117649
  11. 505521
  12. 300304
  13. 337561
  14. 887364
  15. 146689
  16. 65025
  17. 358801
  18. 462400
  19. 996004
  20. 77774761
  21. 93779856
  22. 90231001
  23. 23409
  24. 422500
  25. 964324
  26. 26429881
  27. 630436
  28. 602176
  29. 44235801
  30. 94864
  31. 52635025
  32. 389376
  33. 70756
  34. 81378441
  35. 300304
  36. 813604
  37. 66564
  38. 311364
  39. 683929
  40. 215296

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