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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 832 · 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. 1.6075² =
  2. 2.665² =
  3. 3.3252² =
  4. 4.597² =
  5. 5.454² =
  6. 6.3182² =
  7. 7.693² =
  8. 8.663² =
  9. 9.756² =
  10. 10.222² =
  11. 11.526² =
  12. 12.3181² =
  13. 13.1827² =
  14. 14.235² =
  15. 15.358² =
  16. 16.415² =
  17. 17.418² =
  18. 18.151² =
  19. 19.686² =
  20. 20.1171² =
  21. 21.721² =
  22. 22.174² =
  23. 23.2774² =
  24. 24.222² =
  25. 25.5581² =
  26. 26.269² =
  27. 27.5489² =
  28. 28.386² =
  29. 29.522² =
  30. 30.326² =
  31. 31.5773² =
  32. 32.261² =
  33. 33.700² =
  34. 34.558² =
  35. 35.676² =
  36. 36.326² =
  37. 37.457² =
  38. 38.8780² =
  39. 39.436² =
  40. 40.887² =

Answer key

  1. 36905625
  2. 442225
  3. 10575504
  4. 356409
  5. 206116
  6. 10125124
  7. 480249
  8. 439569
  9. 571536
  10. 49284
  11. 276676
  12. 10118761
  13. 3337929
  14. 55225
  15. 128164
  16. 172225
  17. 174724
  18. 22801
  19. 470596
  20. 1371241
  21. 519841
  22. 30276
  23. 7695076
  24. 49284
  25. 31147561
  26. 72361
  27. 30129121
  28. 148996
  29. 272484
  30. 106276
  31. 33327529
  32. 68121
  33. 490000
  34. 311364
  35. 456976
  36. 106276
  37. 208849
  38. 77088400
  39. 190096
  40. 786769

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