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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 911 · 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. 1.6250² =
  2. 2.175² =
  3. 3.302² =
  4. 4.2303² =
  5. 5.504² =
  6. 6.824² =
  7. 7.7334² =
  8. 8.957² =
  9. 9.8653² =
  10. 10.8349² =
  11. 11.616² =
  12. 12.675² =
  13. 13.511² =
  14. 14.730² =
  15. 15.2935² =
  16. 16.545² =
  17. 17.981² =
  18. 18.511² =
  19. 19.517² =
  20. 20.690² =
  21. 21.115² =
  22. 22.889² =
  23. 23.196² =
  24. 24.366² =
  25. 25.7403² =
  26. 26.168² =
  27. 27.811² =
  28. 28.769² =
  29. 29.9854² =
  30. 30.805² =
  31. 31.1665² =
  32. 32.475² =
  33. 33.284² =
  34. 34.595² =
  35. 35.369² =
  36. 36.195² =
  37. 37.863² =
  38. 38.702² =
  39. 39.722² =
  40. 40.516² =

Answer key

  1. 39062500
  2. 30625
  3. 91204
  4. 5303809
  5. 254016
  6. 678976
  7. 53787556
  8. 915849
  9. 74874409
  10. 69705801
  11. 379456
  12. 455625
  13. 261121
  14. 532900
  15. 8614225
  16. 297025
  17. 962361
  18. 261121
  19. 267289
  20. 476100
  21. 13225
  22. 790321
  23. 38416
  24. 133956
  25. 54804409
  26. 28224
  27. 657721
  28. 591361
  29. 97101316
  30. 648025
  31. 2772225
  32. 225625
  33. 80656
  34. 354025
  35. 136161
  36. 38025
  37. 744769
  38. 492804
  39. 521284
  40. 266256

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