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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 433 · 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. 1.238² =
  2. 2.151² =
  3. 3.623² =
  4. 4.133² =
  5. 5.981² =
  6. 6.1134² =
  7. 7.2972² =
  8. 8.425² =
  9. 9.624² =
  10. 10.332² =
  11. 11.296² =
  12. 12.152² =
  13. 13.684² =
  14. 14.266² =
  15. 15.987² =
  16. 16.8148² =
  17. 17.4972² =
  18. 18.9268² =
  19. 19.203² =
  20. 20.954² =
  21. 21.743² =
  22. 22.383² =
  23. 23.427² =
  24. 24.4998² =
  25. 25.470² =
  26. 26.755² =
  27. 27.6046² =
  28. 28.985² =
  29. 29.228² =
  30. 30.565² =
  31. 31.658² =
  32. 32.794² =
  33. 33.185² =
  34. 34.322² =
  35. 35.861² =
  36. 36.2195² =
  37. 37.179² =
  38. 38.255² =
  39. 39.591² =
  40. 40.690² =

Answer key

  1. 56644
  2. 22801
  3. 388129
  4. 17689
  5. 962361
  6. 1285956
  7. 8832784
  8. 180625
  9. 389376
  10. 110224
  11. 87616
  12. 23104
  13. 467856
  14. 70756
  15. 974169
  16. 66389904
  17. 24720784
  18. 85895824
  19. 41209
  20. 910116
  21. 552049
  22. 146689
  23. 182329
  24. 24980004
  25. 220900
  26. 570025
  27. 36554116
  28. 970225
  29. 51984
  30. 319225
  31. 432964
  32. 630436
  33. 34225
  34. 103684
  35. 741321
  36. 4818025
  37. 32041
  38. 65025
  39. 349281
  40. 476100

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