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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 303 · 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. 1.586² =
  2. 2.221² =
  3. 3.280² =
  4. 4.986² =
  5. 5.785² =
  6. 6.947² =
  7. 7.657² =
  8. 8.474² =
  9. 9.5668² =
  10. 10.858² =
  11. 11.1040² =
  12. 12.2250² =
  13. 13.315² =
  14. 14.5601² =
  15. 15.241² =
  16. 16.827² =
  17. 17.9863² =
  18. 18.2695² =
  19. 19.673² =
  20. 20.863² =
  21. 21.909² =
  22. 22.249² =
  23. 23.956² =
  24. 24.664² =
  25. 25.487² =
  26. 26.604² =
  27. 27.357² =
  28. 28.166² =
  29. 29.157² =
  30. 30.8597² =
  31. 31.721² =
  32. 32.7213² =
  33. 33.156² =
  34. 34.214² =
  35. 35.608² =
  36. 36.946² =
  37. 37.7853² =
  38. 38.5275² =
  39. 39.345² =
  40. 40.5094² =

Answer key

  1. 343396
  2. 48841
  3. 78400
  4. 972196
  5. 616225
  6. 896809
  7. 431649
  8. 224676
  9. 32126224
  10. 736164
  11. 1081600
  12. 5062500
  13. 99225
  14. 31371201
  15. 58081
  16. 683929
  17. 97278769
  18. 7263025
  19. 452929
  20. 744769
  21. 826281
  22. 62001
  23. 913936
  24. 440896
  25. 237169
  26. 364816
  27. 127449
  28. 27556
  29. 24649
  30. 73908409
  31. 519841
  32. 52027369
  33. 24336
  34. 45796
  35. 369664
  36. 894916
  37. 61669609
  38. 27825625
  39. 119025
  40. 25948836

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