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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 80 · 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. 1.324² =
  2. 2.5565² =
  3. 3.465² =
  4. 4.1624² =
  5. 5.194² =
  6. 6.2882² =
  7. 7.6167² =
  8. 8.256² =
  9. 9.6226² =
  10. 10.476² =
  11. 11.627² =
  12. 12.1512² =
  13. 13.715² =
  14. 14.641² =
  15. 15.817² =
  16. 16.599² =
  17. 17.2046² =
  18. 18.709² =
  19. 19.842² =
  20. 20.955² =
  21. 21.493² =
  22. 22.940² =
  23. 23.770² =
  24. 24.5666² =
  25. 25.854² =
  26. 26.3817² =
  27. 27.640² =
  28. 28.739² =
  29. 29.945² =
  30. 30.403² =
  31. 31.533² =
  32. 32.1471² =
  33. 33.118² =
  34. 34.221² =
  35. 35.5631² =
  36. 36.499² =
  37. 37.1923² =
  38. 38.9890² =
  39. 39.155² =
  40. 40.499² =

Answer key

  1. 104976
  2. 30969225
  3. 216225
  4. 2637376
  5. 37636
  6. 8305924
  7. 38031889
  8. 65536
  9. 38763076
  10. 226576
  11. 393129
  12. 2286144
  13. 511225
  14. 410881
  15. 667489
  16. 358801
  17. 4186116
  18. 502681
  19. 708964
  20. 912025
  21. 243049
  22. 883600
  23. 592900
  24. 32103556
  25. 729316
  26. 14569489
  27. 409600
  28. 546121
  29. 893025
  30. 162409
  31. 284089
  32. 2163841
  33. 13924
  34. 48841
  35. 31708161
  36. 249001
  37. 3697929
  38. 97812100
  39. 24025
  40. 249001

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