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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 960 · 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. 1.552² =
  2. 2.4968² =
  3. 3.426² =
  4. 4.804² =
  5. 5.803² =
  6. 6.7780² =
  7. 7.784² =
  8. 8.145² =
  9. 9.4887² =
  10. 10.439² =
  11. 11.4896² =
  12. 12.120² =
  13. 13.875² =
  14. 14.655² =
  15. 15.969² =
  16. 16.485² =
  17. 17.305² =
  18. 18.162² =
  19. 19.4238² =
  20. 20.108² =
  21. 21.770² =
  22. 22.477² =
  23. 23.769² =
  24. 24.241² =
  25. 25.5791² =
  26. 26.5388² =
  27. 27.223² =
  28. 28.845² =
  29. 29.154² =
  30. 30.269² =
  31. 31.1544² =
  32. 32.232² =
  33. 33.2077² =
  34. 34.884² =
  35. 35.8248² =
  36. 36.485² =
  37. 37.702² =
  38. 38.2135² =
  39. 39.215² =
  40. 40.383² =

Answer key

  1. 304704
  2. 24681024
  3. 181476
  4. 646416
  5. 644809
  6. 60528400
  7. 614656
  8. 21025
  9. 23882769
  10. 192721
  11. 23970816
  12. 14400
  13. 765625
  14. 429025
  15. 938961
  16. 235225
  17. 93025
  18. 26244
  19. 17960644
  20. 11664
  21. 592900
  22. 227529
  23. 591361
  24. 58081
  25. 33535681
  26. 29030544
  27. 49729
  28. 714025
  29. 23716
  30. 72361
  31. 2383936
  32. 53824
  33. 4313929
  34. 781456
  35. 68029504
  36. 235225
  37. 492804
  38. 4558225
  39. 46225
  40. 146689

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