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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 570 · 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. 1.406² =
  2. 2.321² =
  3. 3.272² =
  4. 4.742² =
  5. 5.9751² =
  6. 6.168² =
  7. 7.9547² =
  8. 8.719² =
  9. 9.117² =
  10. 10.550² =
  11. 11.330² =
  12. 12.646² =
  13. 13.285² =
  14. 14.353² =
  15. 15.108² =
  16. 16.771² =
  17. 17.770² =
  18. 18.199² =
  19. 19.1881² =
  20. 20.8215² =
  21. 21.2940² =
  22. 22.925² =
  23. 23.482² =
  24. 24.701² =
  25. 25.1529² =
  26. 26.189² =
  27. 27.694² =
  28. 28.937² =
  29. 29.9533² =
  30. 30.516² =
  31. 31.278² =
  32. 32.657² =
  33. 33.216² =
  34. 34.235² =
  35. 35.4026² =
  36. 36.710² =
  37. 37.136² =
  38. 38.580² =
  39. 39.707² =
  40. 40.200² =

Answer key

  1. 164836
  2. 103041
  3. 73984
  4. 550564
  5. 95082001
  6. 28224
  7. 91145209
  8. 516961
  9. 13689
  10. 302500
  11. 108900
  12. 417316
  13. 81225
  14. 124609
  15. 11664
  16. 594441
  17. 592900
  18. 39601
  19. 3538161
  20. 67486225
  21. 8643600
  22. 855625
  23. 232324
  24. 491401
  25. 2337841
  26. 35721
  27. 481636
  28. 877969
  29. 90878089
  30. 266256
  31. 77284
  32. 431649
  33. 46656
  34. 55225
  35. 16208676
  36. 504100
  37. 18496
  38. 336400
  39. 499849
  40. 40000

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