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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 72 · 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. 1.176² =
  2. 2.878² =
  3. 3.104² =
  4. 4.699² =
  5. 5.368² =
  6. 6.227² =
  7. 7.892² =
  8. 8.2352² =
  9. 9.2033² =
  10. 10.345² =
  11. 11.290² =
  12. 12.3541² =
  13. 13.948² =
  14. 14.359² =
  15. 15.1478² =
  16. 16.676² =
  17. 17.7159² =
  18. 18.449² =
  19. 19.805² =
  20. 20.834² =
  21. 21.7628² =
  22. 22.193² =
  23. 23.869² =
  24. 24.277² =
  25. 25.212² =
  26. 26.281² =
  27. 27.644² =
  28. 28.4530² =
  29. 29.5970² =
  30. 30.417² =
  31. 31.950² =
  32. 32.6005² =
  33. 33.581² =
  34. 34.446² =
  35. 35.8644² =
  36. 36.520² =
  37. 37.7702² =
  38. 38.413² =
  39. 39.656² =
  40. 40.5985² =

Answer key

  1. 30976
  2. 770884
  3. 10816
  4. 488601
  5. 135424
  6. 51529
  7. 795664
  8. 5531904
  9. 4133089
  10. 119025
  11. 84100
  12. 12538681
  13. 898704
  14. 128881
  15. 2184484
  16. 456976
  17. 51251281
  18. 201601
  19. 648025
  20. 695556
  21. 58186384
  22. 37249
  23. 755161
  24. 76729
  25. 44944
  26. 78961
  27. 414736
  28. 20520900
  29. 35640900
  30. 173889
  31. 902500
  32. 36060025
  33. 337561
  34. 198916
  35. 74718736
  36. 270400
  37. 59320804
  38. 170569
  39. 430336
  40. 35820225

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