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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 39 · 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. 1.906² =
  2. 2.2934² =
  3. 3.4857² =
  4. 4.2565² =
  5. 5.759² =
  6. 6.3865² =
  7. 7.950² =
  8. 8.434² =
  9. 9.479² =
  10. 10.976² =
  11. 11.9596² =
  12. 12.7907² =
  13. 13.487² =
  14. 14.7170² =
  15. 15.667² =
  16. 16.622² =
  17. 17.2471² =
  18. 18.128² =
  19. 19.597² =
  20. 20.1174² =
  21. 21.310² =
  22. 22.128² =
  23. 23.447² =
  24. 24.108² =
  25. 25.275² =
  26. 26.1521² =
  27. 27.8038² =
  28. 28.231² =
  29. 29.177² =
  30. 30.366² =
  31. 31.281² =
  32. 32.532² =
  33. 33.645² =
  34. 34.461² =
  35. 35.367² =
  36. 36.489² =
  37. 37.6457² =
  38. 38.459² =
  39. 39.8713² =
  40. 40.357² =

Answer key

  1. 820836
  2. 8608356
  3. 23590449
  4. 6579225
  5. 576081
  6. 14938225
  7. 902500
  8. 188356
  9. 229441
  10. 952576
  11. 92083216
  12. 62520649
  13. 237169
  14. 51408900
  15. 444889
  16. 386884
  17. 6105841
  18. 16384
  19. 356409
  20. 1378276
  21. 96100
  22. 16384
  23. 199809
  24. 11664
  25. 75625
  26. 2313441
  27. 64609444
  28. 53361
  29. 31329
  30. 133956
  31. 78961
  32. 283024
  33. 416025
  34. 212521
  35. 134689
  36. 239121
  37. 41692849
  38. 210681
  39. 75916369
  40. 127449

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