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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 185 · 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. 1.6437² =
  2. 2.2108² =
  3. 3.849² =
  4. 4.409² =
  5. 5.8250² =
  6. 6.647² =
  7. 7.407² =
  8. 8.9744² =
  9. 9.504² =
  10. 10.912² =
  11. 11.940² =
  12. 12.146² =
  13. 13.991² =
  14. 14.717² =
  15. 15.1638² =
  16. 16.965² =
  17. 17.128² =
  18. 18.7011² =
  19. 19.262² =
  20. 20.668² =
  21. 21.789² =
  22. 22.5492² =
  23. 23.154² =
  24. 24.9146² =
  25. 25.469² =
  26. 26.150² =
  27. 27.628² =
  28. 28.368² =
  29. 29.9774² =
  30. 30.1719² =
  31. 31.459² =
  32. 32.899² =
  33. 33.4177² =
  34. 34.402² =
  35. 35.872² =
  36. 36.927² =
  37. 37.3808² =
  38. 38.3548² =
  39. 39.520² =
  40. 40.356² =

Answer key

  1. 41434969
  2. 4443664
  3. 720801
  4. 167281
  5. 68062500
  6. 418609
  7. 165649
  8. 94945536
  9. 254016
  10. 831744
  11. 883600
  12. 21316
  13. 982081
  14. 514089
  15. 2683044
  16. 931225
  17. 16384
  18. 49154121
  19. 68644
  20. 446224
  21. 622521
  22. 30162064
  23. 23716
  24. 83649316
  25. 219961
  26. 22500
  27. 394384
  28. 135424
  29. 95531076
  30. 2954961
  31. 210681
  32. 808201
  33. 17447329
  34. 161604
  35. 760384
  36. 859329
  37. 14500864
  38. 12588304
  39. 270400
  40. 126736

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