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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 323 · 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. 1.204² =
  2. 2.140² =
  3. 3.9227² =
  4. 4.171² =
  5. 5.156² =
  6. 6.704² =
  7. 7.178² =
  8. 8.995² =
  9. 9.187² =
  10. 10.876² =
  11. 11.9775² =
  12. 12.653² =
  13. 13.989² =
  14. 14.6863² =
  15. 15.200² =
  16. 16.752² =
  17. 17.1977² =
  18. 18.2237² =
  19. 19.228² =
  20. 20.326² =
  21. 21.6305² =
  22. 22.533² =
  23. 23.208² =
  24. 24.440² =
  25. 25.5733² =
  26. 26.3170² =
  27. 27.845² =
  28. 28.635² =
  29. 29.498² =
  30. 30.748² =
  31. 31.670² =
  32. 32.781² =
  33. 33.290² =
  34. 34.925² =
  35. 35.4824² =
  36. 36.175² =
  37. 37.743² =
  38. 38.736² =
  39. 39.234² =
  40. 40.998² =

Answer key

  1. 41616
  2. 19600
  3. 85137529
  4. 29241
  5. 24336
  6. 495616
  7. 31684
  8. 990025
  9. 34969
  10. 767376
  11. 95550625
  12. 426409
  13. 978121
  14. 47100769
  15. 40000
  16. 565504
  17. 3908529
  18. 5004169
  19. 51984
  20. 106276
  21. 39753025
  22. 284089
  23. 43264
  24. 193600
  25. 32867289
  26. 10048900
  27. 714025
  28. 403225
  29. 248004
  30. 559504
  31. 448900
  32. 609961
  33. 84100
  34. 855625
  35. 23270976
  36. 30625
  37. 552049
  38. 541696
  39. 54756
  40. 996004

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