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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 85 · 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. 1.282² =
  2. 2.9938² =
  3. 3.335² =
  4. 4.2796² =
  5. 5.460² =
  6. 6.118² =
  7. 7.2638² =
  8. 8.7966² =
  9. 9.1652² =
  10. 10.7614² =
  11. 11.746² =
  12. 12.558² =
  13. 13.606² =
  14. 14.839² =
  15. 15.719² =
  16. 16.330² =
  17. 17.913² =
  18. 18.687² =
  19. 19.256² =
  20. 20.545² =
  21. 21.561² =
  22. 22.195² =
  23. 23.816² =
  24. 24.294² =
  25. 25.975² =
  26. 26.165² =
  27. 27.952² =
  28. 28.709² =
  29. 29.313² =
  30. 30.476² =
  31. 31.351² =
  32. 32.8106² =
  33. 33.3677² =
  34. 34.9012² =
  35. 35.909² =
  36. 36.630² =
  37. 37.219² =
  38. 38.675² =
  39. 39.928² =
  40. 40.104² =

Answer key

  1. 79524
  2. 98763844
  3. 112225
  4. 7817616
  5. 211600
  6. 13924
  7. 6959044
  8. 63457156
  9. 2729104
  10. 57972996
  11. 556516
  12. 311364
  13. 367236
  14. 703921
  15. 516961
  16. 108900
  17. 833569
  18. 471969
  19. 65536
  20. 297025
  21. 314721
  22. 38025
  23. 665856
  24. 86436
  25. 950625
  26. 27225
  27. 906304
  28. 502681
  29. 97969
  30. 226576
  31. 123201
  32. 65707236
  33. 13520329
  34. 81216144
  35. 826281
  36. 396900
  37. 47961
  38. 455625
  39. 861184
  40. 10816

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