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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 439 · 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. 1.2812² =
  2. 2.107² =
  3. 3.782² =
  4. 4.805² =
  5. 5.4201² =
  6. 6.702² =
  7. 7.8567² =
  8. 8.280² =
  9. 9.2334² =
  10. 10.282² =
  11. 11.300² =
  12. 12.578² =
  13. 13.7443² =
  14. 14.251² =
  15. 15.2230² =
  16. 16.7587² =
  17. 17.332² =
  18. 18.3728² =
  19. 19.869² =
  20. 20.887² =
  21. 21.701² =
  22. 22.1741² =
  23. 23.652² =
  24. 24.951² =
  25. 25.751² =
  26. 26.2456² =
  27. 27.197² =
  28. 28.9394² =
  29. 29.481² =
  30. 30.5229² =
  31. 31.457² =
  32. 32.545² =
  33. 33.850² =
  34. 34.606² =
  35. 35.791² =
  36. 36.210² =
  37. 37.137² =
  38. 38.881² =
  39. 39.6901² =
  40. 40.270² =

Answer key

  1. 7907344
  2. 11449
  3. 611524
  4. 648025
  5. 17648401
  6. 492804
  7. 73393489
  8. 78400
  9. 5447556
  10. 79524
  11. 90000
  12. 334084
  13. 55398249
  14. 63001
  15. 4972900
  16. 57562569
  17. 110224
  18. 13897984
  19. 755161
  20. 786769
  21. 491401
  22. 3031081
  23. 425104
  24. 904401
  25. 564001
  26. 6031936
  27. 38809
  28. 88247236
  29. 231361
  30. 27342441
  31. 208849
  32. 297025
  33. 722500
  34. 367236
  35. 625681
  36. 44100
  37. 18769
  38. 776161
  39. 47623801
  40. 72900

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