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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 566 · 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. 1.573² =
  2. 2.7608² =
  3. 3.700² =
  4. 4.232² =
  5. 5.993² =
  6. 6.567² =
  7. 7.7141² =
  8. 8.368² =
  9. 9.1275² =
  10. 10.285² =
  11. 11.205² =
  12. 12.4539² =
  13. 13.989² =
  14. 14.558² =
  15. 15.8417² =
  16. 16.339² =
  17. 17.992² =
  18. 18.590² =
  19. 19.430² =
  20. 20.7579² =
  21. 21.122² =
  22. 22.243² =
  23. 23.859² =
  24. 24.407² =
  25. 25.614² =
  26. 26.350² =
  27. 27.1370² =
  28. 28.755² =
  29. 29.7150² =
  30. 30.892² =
  31. 31.476² =
  32. 32.114² =
  33. 33.958² =
  34. 34.7848² =
  35. 35.4904² =
  36. 36.817² =
  37. 37.480² =
  38. 38.378² =
  39. 39.290² =
  40. 40.491² =

Answer key

  1. 328329
  2. 57881664
  3. 490000
  4. 53824
  5. 986049
  6. 321489
  7. 50993881
  8. 135424
  9. 1625625
  10. 81225
  11. 42025
  12. 20602521
  13. 978121
  14. 311364
  15. 70845889
  16. 114921
  17. 984064
  18. 348100
  19. 184900
  20. 57441241
  21. 14884
  22. 59049
  23. 737881
  24. 165649
  25. 376996
  26. 122500
  27. 1876900
  28. 570025
  29. 51122500
  30. 795664
  31. 226576
  32. 12996
  33. 917764
  34. 61591104
  35. 24049216
  36. 667489
  37. 230400
  38. 142884
  39. 84100
  40. 241081

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