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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 154 · 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. 1.784² =
  2. 2.331² =
  3. 3.812² =
  4. 4.398² =
  5. 5.8445² =
  6. 6.238² =
  7. 7.403² =
  8. 8.716² =
  9. 9.121² =
  10. 10.1764² =
  11. 11.332² =
  12. 12.1615² =
  13. 13.9651² =
  14. 14.413² =
  15. 15.7834² =
  16. 16.705² =
  17. 17.839² =
  18. 18.444² =
  19. 19.860² =
  20. 20.137² =
  21. 21.641² =
  22. 22.2375² =
  23. 23.1884² =
  24. 24.776² =
  25. 25.958² =
  26. 26.117² =
  27. 27.898² =
  28. 28.585² =
  29. 29.2339² =
  30. 30.989² =
  31. 31.606² =
  32. 32.400² =
  33. 33.665² =
  34. 34.867² =
  35. 35.751² =
  36. 36.2963² =
  37. 37.1682² =
  38. 38.171² =
  39. 39.386² =
  40. 40.2107² =

Answer key

  1. 614656
  2. 109561
  3. 659344
  4. 158404
  5. 71318025
  6. 56644
  7. 162409
  8. 512656
  9. 14641
  10. 3111696
  11. 110224
  12. 2608225
  13. 93141801
  14. 170569
  15. 61371556
  16. 497025
  17. 703921
  18. 197136
  19. 739600
  20. 18769
  21. 410881
  22. 5640625
  23. 3549456
  24. 602176
  25. 917764
  26. 13689
  27. 806404
  28. 342225
  29. 5470921
  30. 978121
  31. 367236
  32. 160000
  33. 442225
  34. 751689
  35. 564001
  36. 8779369
  37. 2829124
  38. 29241
  39. 148996
  40. 4439449

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