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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 661 · 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. 1.933² =
  2. 2.773² =
  3. 3.797² =
  4. 4.712² =
  5. 5.781² =
  6. 6.8471² =
  7. 7.855² =
  8. 8.660² =
  9. 9.697² =
  10. 10.628² =
  11. 11.7585² =
  12. 12.1381² =
  13. 13.750² =
  14. 14.8109² =
  15. 15.497² =
  16. 16.416² =
  17. 17.3222² =
  18. 18.829² =
  19. 19.238² =
  20. 20.463² =
  21. 21.9241² =
  22. 22.122² =
  23. 23.759² =
  24. 24.523² =
  25. 25.832² =
  26. 26.800² =
  27. 27.784² =
  28. 28.162² =
  29. 29.716² =
  30. 30.201² =
  31. 31.9776² =
  32. 32.344² =
  33. 33.629² =
  34. 34.5026² =
  35. 35.6341² =
  36. 36.961² =
  37. 37.802² =
  38. 38.999² =
  39. 39.505² =
  40. 40.5025² =

Answer key

  1. 870489
  2. 597529
  3. 635209
  4. 506944
  5. 609961
  6. 71757841
  7. 731025
  8. 435600
  9. 485809
  10. 394384
  11. 57532225
  12. 1907161
  13. 562500
  14. 65755881
  15. 247009
  16. 173056
  17. 10381284
  18. 687241
  19. 56644
  20. 214369
  21. 85396081
  22. 14884
  23. 576081
  24. 273529
  25. 692224
  26. 640000
  27. 614656
  28. 26244
  29. 512656
  30. 40401
  31. 95570176
  32. 118336
  33. 395641
  34. 25260676
  35. 40208281
  36. 923521
  37. 643204
  38. 998001
  39. 255025
  40. 25250625

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