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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 782 · 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. 1.846² =
  2. 2.940² =
  3. 3.2216² =
  4. 4.302² =
  5. 5.204² =
  6. 6.2363² =
  7. 7.7151² =
  8. 8.111² =
  9. 9.203² =
  10. 10.620² =
  11. 11.8211² =
  12. 12.5398² =
  13. 13.171² =
  14. 14.789² =
  15. 15.744² =
  16. 16.9260² =
  17. 17.5486² =
  18. 18.845² =
  19. 19.4877² =
  20. 20.344² =
  21. 21.353² =
  22. 22.278² =
  23. 23.332² =
  24. 24.197² =
  25. 25.166² =
  26. 26.143² =
  27. 27.365² =
  28. 28.527² =
  29. 29.180² =
  30. 30.480² =
  31. 31.1937² =
  32. 32.877² =
  33. 33.5827² =
  34. 34.723² =
  35. 35.293² =
  36. 36.909² =
  37. 37.339² =
  38. 38.4486² =
  39. 39.3986² =
  40. 40.894² =

Answer key

  1. 715716
  2. 883600
  3. 4910656
  4. 91204
  5. 41616
  6. 5583769
  7. 51136801
  8. 12321
  9. 41209
  10. 384400
  11. 67420521
  12. 29138404
  13. 29241
  14. 622521
  15. 553536
  16. 85747600
  17. 30096196
  18. 714025
  19. 23785129
  20. 118336
  21. 124609
  22. 77284
  23. 110224
  24. 38809
  25. 27556
  26. 20449
  27. 133225
  28. 277729
  29. 32400
  30. 230400
  31. 3751969
  32. 769129
  33. 33953929
  34. 522729
  35. 85849
  36. 826281
  37. 114921
  38. 20124196
  39. 15888196
  40. 799236

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