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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 332 · 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. 1.970² =
  2. 2.164² =
  3. 3.5372² =
  4. 4.2981² =
  5. 5.446² =
  6. 6.175² =
  7. 7.8247² =
  8. 8.3942² =
  9. 9.917² =
  10. 10.646² =
  11. 11.779² =
  12. 12.411² =
  13. 13.173² =
  14. 14.1639² =
  15. 15.742² =
  16. 16.6619² =
  17. 17.3196² =
  18. 18.5862² =
  19. 19.4467² =
  20. 20.1960² =
  21. 21.636² =
  22. 22.361² =
  23. 23.682² =
  24. 24.140² =
  25. 25.1749² =
  26. 26.288² =
  27. 27.378² =
  28. 28.127² =
  29. 29.148² =
  30. 30.731² =
  31. 31.957² =
  32. 32.6235² =
  33. 33.767² =
  34. 34.745² =
  35. 35.157² =
  36. 36.462² =
  37. 37.1947² =
  38. 38.4744² =
  39. 39.305² =
  40. 40.3344² =

Answer key

  1. 940900
  2. 26896
  3. 28858384
  4. 8886361
  5. 198916
  6. 30625
  7. 68013009
  8. 15539364
  9. 840889
  10. 417316
  11. 606841
  12. 168921
  13. 29929
  14. 2686321
  15. 550564
  16. 43811161
  17. 10214416
  18. 34363044
  19. 19954089
  20. 3841600
  21. 404496
  22. 130321
  23. 465124
  24. 19600
  25. 3059001
  26. 82944
  27. 142884
  28. 16129
  29. 21904
  30. 534361
  31. 915849
  32. 38875225
  33. 588289
  34. 555025
  35. 24649
  36. 213444
  37. 3790809
  38. 22505536
  39. 93025
  40. 11182336

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