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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 895 · 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. 1.811² =
  2. 2.278² =
  3. 3.102² =
  4. 4.127² =
  5. 5.139² =
  6. 6.9395² =
  7. 7.863² =
  8. 8.240² =
  9. 9.651² =
  10. 10.6887² =
  11. 11.223² =
  12. 12.803² =
  13. 13.9120² =
  14. 14.138² =
  15. 15.726² =
  16. 16.121² =
  17. 17.3674² =
  18. 18.6162² =
  19. 19.504² =
  20. 20.2405² =
  21. 21.530² =
  22. 22.918² =
  23. 23.721² =
  24. 24.9986² =
  25. 25.3261² =
  26. 26.7117² =
  27. 27.1968² =
  28. 28.899² =
  29. 29.450² =
  30. 30.1165² =
  31. 31.647² =
  32. 32.7776² =
  33. 33.2113² =
  34. 34.3734² =
  35. 35.733² =
  36. 36.868² =
  37. 37.435² =
  38. 38.668² =
  39. 39.753² =
  40. 40.334² =

Answer key

  1. 657721
  2. 77284
  3. 10404
  4. 16129
  5. 19321
  6. 88266025
  7. 744769
  8. 57600
  9. 423801
  10. 47430769
  11. 49729
  12. 644809
  13. 83174400
  14. 19044
  15. 527076
  16. 14641
  17. 13498276
  18. 37970244
  19. 254016
  20. 5784025
  21. 280900
  22. 842724
  23. 519841
  24. 99720196
  25. 10634121
  26. 50651689
  27. 3873024
  28. 808201
  29. 202500
  30. 1357225
  31. 418609
  32. 60466176
  33. 4464769
  34. 13942756
  35. 537289
  36. 753424
  37. 189225
  38. 446224
  39. 567009
  40. 111556

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