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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 667 · 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. 1.4896² =
  2. 2.3030² =
  3. 3.284² =
  4. 4.7904² =
  5. 5.196² =
  6. 6.910² =
  7. 7.854² =
  8. 8.526² =
  9. 9.956² =
  10. 10.5409² =
  11. 11.9721² =
  12. 12.1880² =
  13. 13.8030² =
  14. 14.9463² =
  15. 15.8449² =
  16. 16.3954² =
  17. 17.371² =
  18. 18.313² =
  19. 19.2148² =
  20. 20.7746² =
  21. 21.199² =
  22. 22.5399² =
  23. 23.365² =
  24. 24.927² =
  25. 25.386² =
  26. 26.6255² =
  27. 27.285² =
  28. 28.9415² =
  29. 29.544² =
  30. 30.2531² =
  31. 31.766² =
  32. 32.4501² =
  33. 33.736² =
  34. 34.170² =
  35. 35.946² =
  36. 36.389² =
  37. 37.839² =
  38. 38.492² =
  39. 39.552² =
  40. 40.6890² =

Answer key

  1. 23970816
  2. 9180900
  3. 80656
  4. 62473216
  5. 38416
  6. 828100
  7. 729316
  8. 276676
  9. 913936
  10. 29257281
  11. 94497841
  12. 3534400
  13. 64480900
  14. 89548369
  15. 71385601
  16. 15634116
  17. 137641
  18. 97969
  19. 4613904
  20. 60000516
  21. 39601
  22. 29149201
  23. 133225
  24. 859329
  25. 148996
  26. 39125025
  27. 81225
  28. 88642225
  29. 295936
  30. 6405961
  31. 586756
  32. 20259001
  33. 541696
  34. 28900
  35. 894916
  36. 151321
  37. 703921
  38. 242064
  39. 304704
  40. 47472100

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