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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 886 · 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. 1.299² =
  2. 2.332² =
  3. 3.432² =
  4. 4.334² =
  5. 5.161² =
  6. 6.414² =
  7. 7.8569² =
  8. 8.6116² =
  9. 9.9797² =
  10. 10.444² =
  11. 11.141² =
  12. 12.660² =
  13. 13.377² =
  14. 14.6273² =
  15. 15.919² =
  16. 16.217² =
  17. 17.9150² =
  18. 18.786² =
  19. 19.594² =
  20. 20.969² =
  21. 21.288² =
  22. 22.616² =
  23. 23.204² =
  24. 24.482² =
  25. 25.8558² =
  26. 26.697² =
  27. 27.658² =
  28. 28.9574² =
  29. 29.6168² =
  30. 30.2507² =
  31. 31.577² =
  32. 32.142² =
  33. 33.260² =
  34. 34.954² =
  35. 35.5806² =
  36. 36.8628² =
  37. 37.767² =
  38. 38.954² =
  39. 39.1697² =
  40. 40.9776² =

Answer key

  1. 89401
  2. 110224
  3. 186624
  4. 111556
  5. 25921
  6. 171396
  7. 73427761
  8. 37405456
  9. 95981209
  10. 197136
  11. 19881
  12. 435600
  13. 142129
  14. 39350529
  15. 844561
  16. 47089
  17. 83722500
  18. 617796
  19. 352836
  20. 938961
  21. 82944
  22. 379456
  23. 41616
  24. 232324
  25. 73239364
  26. 485809
  27. 432964
  28. 91661476
  29. 38044224
  30. 6285049
  31. 332929
  32. 20164
  33. 67600
  34. 910116
  35. 33709636
  36. 74442384
  37. 588289
  38. 910116
  39. 2879809
  40. 95570176

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