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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 987 · 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. 1.7647² =
  2. 2.640² =
  3. 3.6905² =
  4. 4.346² =
  5. 5.2599² =
  6. 6.766² =
  7. 7.985² =
  8. 8.731² =
  9. 9.2801² =
  10. 10.533² =
  11. 11.198² =
  12. 12.630² =
  13. 13.889² =
  14. 14.5704² =
  15. 15.512² =
  16. 16.580² =
  17. 17.1497² =
  18. 18.210² =
  19. 19.5496² =
  20. 20.957² =
  21. 21.920² =
  22. 22.170² =
  23. 23.742² =
  24. 24.4933² =
  25. 25.763² =
  26. 26.267² =
  27. 27.124² =
  28. 28.2763² =
  29. 29.105² =
  30. 30.687² =
  31. 31.475² =
  32. 32.230² =
  33. 33.8997² =
  34. 34.6812² =
  35. 35.355² =
  36. 36.110² =
  37. 37.702² =
  38. 38.283² =
  39. 39.297² =
  40. 40.7724² =

Answer key

  1. 58476609
  2. 409600
  3. 47679025
  4. 119716
  5. 6754801
  6. 586756
  7. 970225
  8. 534361
  9. 7845601
  10. 284089
  11. 39204
  12. 396900
  13. 790321
  14. 32535616
  15. 262144
  16. 336400
  17. 2241009
  18. 44100
  19. 30206016
  20. 915849
  21. 846400
  22. 28900
  23. 550564
  24. 24334489
  25. 582169
  26. 71289
  27. 15376
  28. 7634169
  29. 11025
  30. 471969
  31. 225625
  32. 52900
  33. 80946009
  34. 46403344
  35. 126025
  36. 12100
  37. 492804
  38. 80089
  39. 88209
  40. 59660176

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