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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 508 · 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. 1.128² =
  2. 2.112² =
  3. 3.565² =
  4. 4.3374² =
  5. 5.920² =
  6. 6.107² =
  7. 7.921² =
  8. 8.535² =
  9. 9.164² =
  10. 10.911² =
  11. 11.840² =
  12. 12.687² =
  13. 13.5831² =
  14. 14.447² =
  15. 15.375² =
  16. 16.590² =
  17. 17.146² =
  18. 18.779² =
  19. 19.424² =
  20. 20.688² =
  21. 21.452² =
  22. 22.132² =
  23. 23.527² =
  24. 24.899² =
  25. 25.549² =
  26. 26.7274² =
  27. 27.1358² =
  28. 28.272² =
  29. 29.262² =
  30. 30.818² =
  31. 31.749² =
  32. 32.737² =
  33. 33.769² =
  34. 34.747² =
  35. 35.8365² =
  36. 36.608² =
  37. 37.3331² =
  38. 38.231² =
  39. 39.555² =
  40. 40.869² =

Answer key

  1. 16384
  2. 12544
  3. 319225
  4. 11383876
  5. 846400
  6. 11449
  7. 848241
  8. 286225
  9. 26896
  10. 829921
  11. 705600
  12. 471969
  13. 34000561
  14. 199809
  15. 140625
  16. 348100
  17. 21316
  18. 606841
  19. 179776
  20. 473344
  21. 204304
  22. 17424
  23. 277729
  24. 808201
  25. 301401
  26. 52911076
  27. 1844164
  28. 73984
  29. 68644
  30. 669124
  31. 561001
  32. 543169
  33. 591361
  34. 558009
  35. 69973225
  36. 369664
  37. 11095561
  38. 53361
  39. 308025
  40. 755161

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