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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 739 · 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. 1.217² =
  2. 2.2228² =
  3. 3.337² =
  4. 4.910² =
  5. 5.8704² =
  6. 6.6906² =
  7. 7.130² =
  8. 8.5145² =
  9. 9.684² =
  10. 10.213² =
  11. 11.5570² =
  12. 12.2871² =
  13. 13.256² =
  14. 14.9146² =
  15. 15.465² =
  16. 16.8340² =
  17. 17.722² =
  18. 18.612² =
  19. 19.2187² =
  20. 20.3157² =
  21. 21.553² =
  22. 22.213² =
  23. 23.607² =
  24. 24.3943² =
  25. 25.788² =
  26. 26.1461² =
  27. 27.403² =
  28. 28.704² =
  29. 29.704² =
  30. 30.341² =
  31. 31.834² =
  32. 32.283² =
  33. 33.519² =
  34. 34.1058² =
  35. 35.567² =
  36. 36.324² =
  37. 37.715² =
  38. 38.4184² =
  39. 39.7921² =
  40. 40.230² =

Answer key

  1. 47089
  2. 4963984
  3. 113569
  4. 828100
  5. 75759616
  6. 47692836
  7. 16900
  8. 26471025
  9. 467856
  10. 45369
  11. 31024900
  12. 8242641
  13. 65536
  14. 83649316
  15. 216225
  16. 69555600
  17. 521284
  18. 374544
  19. 4782969
  20. 9966649
  21. 305809
  22. 45369
  23. 368449
  24. 15547249
  25. 620944
  26. 2134521
  27. 162409
  28. 495616
  29. 495616
  30. 116281
  31. 695556
  32. 80089
  33. 269361
  34. 1119364
  35. 321489
  36. 104976
  37. 511225
  38. 17505856
  39. 62742241
  40. 52900

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