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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 311 · 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. 1.271² =
  2. 2.992² =
  3. 3.818² =
  4. 4.303² =
  5. 5.743² =
  6. 6.477² =
  7. 7.770² =
  8. 8.2901² =
  9. 9.6604² =
  10. 10.390² =
  11. 11.2089² =
  12. 12.7067² =
  13. 13.976² =
  14. 14.308² =
  15. 15.8883² =
  16. 16.3290² =
  17. 17.891² =
  18. 18.423² =
  19. 19.461² =
  20. 20.317² =
  21. 21.2518² =
  22. 22.930² =
  23. 23.946² =
  24. 24.423² =
  25. 25.1786² =
  26. 26.106² =
  27. 27.692² =
  28. 28.590² =
  29. 29.4279² =
  30. 30.168² =
  31. 31.221² =
  32. 32.202² =
  33. 33.496² =
  34. 34.528² =
  35. 35.540² =
  36. 36.928² =
  37. 37.956² =
  38. 38.205² =
  39. 39.277² =
  40. 40.152² =

Answer key

  1. 73441
  2. 984064
  3. 669124
  4. 91809
  5. 552049
  6. 227529
  7. 592900
  8. 8415801
  9. 43612816
  10. 152100
  11. 4363921
  12. 49942489
  13. 952576
  14. 94864
  15. 78907689
  16. 10824100
  17. 793881
  18. 178929
  19. 212521
  20. 100489
  21. 6340324
  22. 864900
  23. 894916
  24. 178929
  25. 3189796
  26. 11236
  27. 478864
  28. 348100
  29. 18309841
  30. 28224
  31. 48841
  32. 40804
  33. 246016
  34. 278784
  35. 291600
  36. 861184
  37. 913936
  38. 42025
  39. 76729
  40. 23104

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