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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 220 · 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. 1.1279² =
  2. 2.153² =
  3. 3.185² =
  4. 4.264² =
  5. 5.9496² =
  6. 6.8944² =
  7. 7.5879² =
  8. 8.2056² =
  9. 9.372² =
  10. 10.128² =
  11. 11.341² =
  12. 12.621² =
  13. 13.915² =
  14. 14.605² =
  15. 15.304² =
  16. 16.335² =
  17. 17.6868² =
  18. 18.730² =
  19. 19.939² =
  20. 20.751² =
  21. 21.667² =
  22. 22.815² =
  23. 23.4614² =
  24. 24.2958² =
  25. 25.796² =
  26. 26.6403² =
  27. 27.729² =
  28. 28.2225² =
  29. 29.6089² =
  30. 30.133² =
  31. 31.989² =
  32. 32.104² =
  33. 33.785² =
  34. 34.212² =
  35. 35.332² =
  36. 36.1664² =
  37. 37.2159² =
  38. 38.541² =
  39. 39.490² =
  40. 40.682² =

Answer key

  1. 1635841
  2. 23409
  3. 34225
  4. 69696
  5. 90174016
  6. 79995136
  7. 34562641
  8. 4227136
  9. 138384
  10. 16384
  11. 116281
  12. 385641
  13. 837225
  14. 366025
  15. 92416
  16. 112225
  17. 47169424
  18. 532900
  19. 881721
  20. 564001
  21. 444889
  22. 664225
  23. 21288996
  24. 8749764
  25. 633616
  26. 40998409
  27. 531441
  28. 4950625
  29. 37075921
  30. 17689
  31. 978121
  32. 10816
  33. 616225
  34. 44944
  35. 110224
  36. 2768896
  37. 4661281
  38. 292681
  39. 240100
  40. 465124

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