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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 14 · 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. 1.652² =
  2. 2.255² =
  3. 3.241² =
  4. 4.914² =
  5. 5.149² =
  6. 6.9379² =
  7. 7.9320² =
  8. 8.5193² =
  9. 9.2498² =
  10. 10.175² =
  11. 11.885² =
  12. 12.613² =
  13. 13.884² =
  14. 14.181² =
  15. 15.8700² =
  16. 16.647² =
  17. 17.636² =
  18. 18.478² =
  19. 19.603² =
  20. 20.638² =
  21. 21.3888² =
  22. 22.2099² =
  23. 23.4181² =
  24. 24.3605² =
  25. 25.519² =
  26. 26.675² =
  27. 27.245² =
  28. 28.9842² =
  29. 29.9610² =
  30. 30.9827² =
  31. 31.519² =
  32. 32.5216² =
  33. 33.598² =
  34. 34.480² =
  35. 35.748² =
  36. 36.429² =
  37. 37.114² =
  38. 38.219² =
  39. 39.381² =
  40. 40.338² =

Answer key

  1. 425104
  2. 65025
  3. 58081
  4. 835396
  5. 22201
  6. 87965641
  7. 86862400
  8. 26967249
  9. 6240004
  10. 30625
  11. 783225
  12. 375769
  13. 781456
  14. 32761
  15. 75690000
  16. 418609
  17. 404496
  18. 228484
  19. 363609
  20. 407044
  21. 15116544
  22. 4405801
  23. 17480761
  24. 12996025
  25. 269361
  26. 455625
  27. 60025
  28. 96864964
  29. 92352100
  30. 96569929
  31. 269361
  32. 27206656
  33. 357604
  34. 230400
  35. 559504
  36. 184041
  37. 12996
  38. 47961
  39. 145161
  40. 114244

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