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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 321 · 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. 1.1491² =
  2. 2.199² =
  3. 3.338² =
  4. 4.595² =
  5. 5.558² =
  6. 6.249² =
  7. 7.6666² =
  8. 8.3991² =
  9. 9.3140² =
  10. 10.4090² =
  11. 11.5437² =
  12. 12.956² =
  13. 13.235² =
  14. 14.139² =
  15. 15.876² =
  16. 16.232² =
  17. 17.372² =
  18. 18.3194² =
  19. 19.201² =
  20. 20.474² =
  21. 21.292² =
  22. 22.405² =
  23. 23.314² =
  24. 24.4200² =
  25. 25.449² =
  26. 26.301² =
  27. 27.8186² =
  28. 28.7809² =
  29. 29.668² =
  30. 30.189² =
  31. 31.415² =
  32. 32.2080² =
  33. 33.580² =
  34. 34.9589² =
  35. 35.226² =
  36. 36.673² =
  37. 37.655² =
  38. 38.867² =
  39. 39.370² =
  40. 40.1730² =

Answer key

  1. 2223081
  2. 39601
  3. 114244
  4. 354025
  5. 311364
  6. 62001
  7. 44435556
  8. 15928081
  9. 9859600
  10. 16728100
  11. 29560969
  12. 913936
  13. 55225
  14. 19321
  15. 767376
  16. 53824
  17. 138384
  18. 10201636
  19. 40401
  20. 224676
  21. 85264
  22. 164025
  23. 98596
  24. 17640000
  25. 201601
  26. 90601
  27. 67010596
  28. 60980481
  29. 446224
  30. 35721
  31. 172225
  32. 4326400
  33. 336400
  34. 91948921
  35. 51076
  36. 452929
  37. 429025
  38. 751689
  39. 136900
  40. 2992900

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