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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 816 · 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. 1.965² =
  2. 2.622² =
  3. 3.880² =
  4. 4.809² =
  5. 5.613² =
  6. 6.7566² =
  7. 7.336² =
  8. 8.242² =
  9. 9.8014² =
  10. 10.991² =
  11. 11.867² =
  12. 12.879² =
  13. 13.965² =
  14. 14.238² =
  15. 15.657² =
  16. 16.6564² =
  17. 17.489² =
  18. 18.627² =
  19. 19.2724² =
  20. 20.161² =
  21. 21.299² =
  22. 22.4998² =
  23. 23.166² =
  24. 24.3769² =
  25. 25.5139² =
  26. 26.6943² =
  27. 27.214² =
  28. 28.207² =
  29. 29.327² =
  30. 30.199² =
  31. 31.469² =
  32. 32.9492² =
  33. 33.1020² =
  34. 34.225² =
  35. 35.765² =
  36. 36.7710² =
  37. 37.9940² =
  38. 38.258² =
  39. 39.7797² =
  40. 40.9758² =

Answer key

  1. 931225
  2. 386884
  3. 774400
  4. 654481
  5. 375769
  6. 57244356
  7. 112896
  8. 58564
  9. 64224196
  10. 982081
  11. 751689
  12. 772641
  13. 931225
  14. 56644
  15. 431649
  16. 43086096
  17. 239121
  18. 393129
  19. 7420176
  20. 25921
  21. 89401
  22. 24980004
  23. 27556
  24. 14205361
  25. 26409321
  26. 48205249
  27. 45796
  28. 42849
  29. 106929
  30. 39601
  31. 219961
  32. 90098064
  33. 1040400
  34. 50625
  35. 585225
  36. 59444100
  37. 98803600
  38. 66564
  39. 60793209
  40. 95218564

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