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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 695 · 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. 1.316² =
  2. 2.6599² =
  3. 3.229² =
  4. 4.8604² =
  5. 5.355² =
  6. 6.2278² =
  7. 7.414² =
  8. 8.586² =
  9. 9.300² =
  10. 10.6880² =
  11. 11.3804² =
  12. 12.9165² =
  13. 13.3887² =
  14. 14.3422² =
  15. 15.375² =
  16. 16.360² =
  17. 17.2644² =
  18. 18.2906² =
  19. 19.415² =
  20. 20.340² =
  21. 21.286² =
  22. 22.205² =
  23. 23.833² =
  24. 24.317² =
  25. 25.477² =
  26. 26.1989² =
  27. 27.602² =
  28. 28.980² =
  29. 29.148² =
  30. 30.958² =
  31. 31.499² =
  32. 32.9701² =
  33. 33.273² =
  34. 34.8745² =
  35. 35.5189² =
  36. 36.5882² =
  37. 37.224² =
  38. 38.1046² =
  39. 39.700² =
  40. 40.134² =

Answer key

  1. 99856
  2. 43546801
  3. 52441
  4. 74028816
  5. 126025
  6. 5189284
  7. 171396
  8. 343396
  9. 90000
  10. 47334400
  11. 14470416
  12. 83997225
  13. 15108769
  14. 11710084
  15. 140625
  16. 129600
  17. 6990736
  18. 8444836
  19. 172225
  20. 115600
  21. 81796
  22. 42025
  23. 693889
  24. 100489
  25. 227529
  26. 3956121
  27. 362404
  28. 960400
  29. 21904
  30. 917764
  31. 249001
  32. 94109401
  33. 74529
  34. 76475025
  35. 26925721
  36. 34597924
  37. 50176
  38. 1094116
  39. 490000
  40. 17956

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