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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 492 · 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. 1.619² =
  2. 2.271² =
  3. 3.667² =
  4. 4.5942² =
  5. 5.647² =
  6. 6.314² =
  7. 7.798² =
  8. 8.7340² =
  9. 9.607² =
  10. 10.487² =
  11. 11.994² =
  12. 12.182² =
  13. 13.328² =
  14. 14.201² =
  15. 15.6881² =
  16. 16.970² =
  17. 17.768² =
  18. 18.672² =
  19. 19.552² =
  20. 20.127² =
  21. 21.969² =
  22. 22.873² =
  23. 23.783² =
  24. 24.2404² =
  25. 25.8002² =
  26. 26.417² =
  27. 27.2665² =
  28. 28.5979² =
  29. 29.777² =
  30. 30.658² =
  31. 31.9734² =
  32. 32.192² =
  33. 33.211² =
  34. 34.141² =
  35. 35.636² =
  36. 36.173² =
  37. 37.240² =
  38. 38.703² =
  39. 39.295² =
  40. 40.3602² =

Answer key

  1. 383161
  2. 73441
  3. 444889
  4. 35307364
  5. 418609
  6. 98596
  7. 636804
  8. 53875600
  9. 368449
  10. 237169
  11. 988036
  12. 33124
  13. 107584
  14. 40401
  15. 47348161
  16. 940900
  17. 589824
  18. 451584
  19. 304704
  20. 16129
  21. 938961
  22. 762129
  23. 613089
  24. 5779216
  25. 64032004
  26. 173889
  27. 7102225
  28. 35748441
  29. 603729
  30. 432964
  31. 94750756
  32. 36864
  33. 44521
  34. 19881
  35. 404496
  36. 29929
  37. 57600
  38. 494209
  39. 87025
  40. 12974404

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