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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 298 · 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. 1.7195² =
  2. 2.606² =
  3. 3.188² =
  4. 4.782² =
  5. 5.1779² =
  6. 6.634² =
  7. 7.423² =
  8. 8.7335² =
  9. 9.3754² =
  10. 10.947² =
  11. 11.323² =
  12. 12.686² =
  13. 13.867² =
  14. 14.267² =
  15. 15.878² =
  16. 16.288² =
  17. 17.632² =
  18. 18.955² =
  19. 19.585² =
  20. 20.255² =
  21. 21.307² =
  22. 22.931² =
  23. 23.1268² =
  24. 24.4686² =
  25. 25.907² =
  26. 26.839² =
  27. 27.218² =
  28. 28.4164² =
  29. 29.5329² =
  30. 30.3322² =
  31. 31.7449² =
  32. 32.587² =
  33. 33.627² =
  34. 34.111² =
  35. 35.4575² =
  36. 36.9516² =
  37. 37.467² =
  38. 38.112² =
  39. 39.8451² =
  40. 40.735² =

Answer key

  1. 51768025
  2. 367236
  3. 35344
  4. 611524
  5. 3164841
  6. 401956
  7. 178929
  8. 53802225
  9. 14092516
  10. 896809
  11. 104329
  12. 470596
  13. 751689
  14. 71289
  15. 770884
  16. 82944
  17. 399424
  18. 912025
  19. 342225
  20. 65025
  21. 94249
  22. 866761
  23. 1607824
  24. 21958596
  25. 822649
  26. 703921
  27. 47524
  28. 17338896
  29. 28398241
  30. 11035684
  31. 55487601
  32. 344569
  33. 393129
  34. 12321
  35. 20930625
  36. 90554256
  37. 218089
  38. 12544
  39. 71419401
  40. 540225

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