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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 804 · 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. 1.808² =
  2. 2.871² =
  3. 3.710² =
  4. 4.2962² =
  5. 5.1152² =
  6. 6.934² =
  7. 7.119² =
  8. 8.9739² =
  9. 9.676² =
  10. 10.238² =
  11. 11.158² =
  12. 12.541² =
  13. 13.747² =
  14. 14.670² =
  15. 15.895² =
  16. 16.436² =
  17. 17.739² =
  18. 18.793² =
  19. 19.137² =
  20. 20.5254² =
  21. 21.558² =
  22. 22.5378² =
  23. 23.399² =
  24. 24.910² =
  25. 25.9078² =
  26. 26.272² =
  27. 27.494² =
  28. 28.484² =
  29. 29.8883² =
  30. 30.1235² =
  31. 31.882² =
  32. 32.137² =
  33. 33.9007² =
  34. 34.1413² =
  35. 35.256² =
  36. 36.362² =
  37. 37.3001² =
  38. 38.296² =
  39. 39.712² =
  40. 40.9077² =

Answer key

  1. 652864
  2. 758641
  3. 504100
  4. 8773444
  5. 1327104
  6. 872356
  7. 14161
  8. 94848121
  9. 456976
  10. 56644
  11. 24964
  12. 292681
  13. 558009
  14. 448900
  15. 801025
  16. 190096
  17. 546121
  18. 628849
  19. 18769
  20. 27604516
  21. 311364
  22. 28922884
  23. 159201
  24. 828100
  25. 82410084
  26. 73984
  27. 244036
  28. 234256
  29. 78907689
  30. 1525225
  31. 777924
  32. 18769
  33. 81126049
  34. 1996569
  35. 65536
  36. 131044
  37. 9006001
  38. 87616
  39. 506944
  40. 82391929

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