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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 571 · 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. 1.370² =
  2. 2.128² =
  3. 3.517² =
  4. 4.504² =
  5. 5.7490² =
  6. 6.539² =
  7. 7.782² =
  8. 8.217² =
  9. 9.7193² =
  10. 10.597² =
  11. 11.401² =
  12. 12.354² =
  13. 13.626² =
  14. 14.193² =
  15. 15.337² =
  16. 16.961² =
  17. 17.999² =
  18. 18.2465² =
  19. 19.338² =
  20. 20.215² =
  21. 21.464² =
  22. 22.7959² =
  23. 23.259² =
  24. 24.2033² =
  25. 25.831² =
  26. 26.623² =
  27. 27.230² =
  28. 28.563² =
  29. 29.3133² =
  30. 30.206² =
  31. 31.322² =
  32. 32.3097² =
  33. 33.382² =
  34. 34.5846² =
  35. 35.529² =
  36. 36.203² =
  37. 37.446² =
  38. 38.561² =
  39. 39.165² =
  40. 40.9467² =

Answer key

  1. 136900
  2. 16384
  3. 267289
  4. 254016
  5. 56100100
  6. 290521
  7. 611524
  8. 47089
  9. 51739249
  10. 356409
  11. 160801
  12. 125316
  13. 391876
  14. 37249
  15. 113569
  16. 923521
  17. 998001
  18. 6076225
  19. 114244
  20. 46225
  21. 215296
  22. 63345681
  23. 67081
  24. 4133089
  25. 690561
  26. 388129
  27. 52900
  28. 316969
  29. 9815689
  30. 42436
  31. 103684
  32. 9591409
  33. 145924
  34. 34175716
  35. 279841
  36. 41209
  37. 198916
  38. 314721
  39. 27225
  40. 89624089

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