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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 865 · 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. 1.3063² =
  2. 2.752² =
  3. 3.895² =
  4. 4.240² =
  5. 5.648² =
  6. 6.627² =
  7. 7.337² =
  8. 8.1814² =
  9. 9.173² =
  10. 10.982² =
  11. 11.5226² =
  12. 12.321² =
  13. 13.300² =
  14. 14.9407² =
  15. 15.918² =
  16. 16.7716² =
  17. 17.9522² =
  18. 18.845² =
  19. 19.1251² =
  20. 20.665² =
  21. 21.952² =
  22. 22.971² =
  23. 23.166² =
  24. 24.731² =
  25. 25.2274² =
  26. 26.3606² =
  27. 27.858² =
  28. 28.207² =
  29. 29.906² =
  30. 30.8623² =
  31. 31.770² =
  32. 32.991² =
  33. 33.122² =
  34. 34.599² =
  35. 35.564² =
  36. 36.489² =
  37. 37.2670² =
  38. 38.6772² =
  39. 39.4387² =
  40. 40.7917² =

Answer key

  1. 9381969
  2. 565504
  3. 801025
  4. 57600
  5. 419904
  6. 393129
  7. 113569
  8. 3290596
  9. 29929
  10. 964324
  11. 27311076
  12. 103041
  13. 90000
  14. 88491649
  15. 842724
  16. 59536656
  17. 90668484
  18. 714025
  19. 1565001
  20. 442225
  21. 906304
  22. 942841
  23. 27556
  24. 534361
  25. 5171076
  26. 13003236
  27. 736164
  28. 42849
  29. 820836
  30. 74356129
  31. 592900
  32. 982081
  33. 14884
  34. 358801
  35. 318096
  36. 239121
  37. 7128900
  38. 45859984
  39. 19245769
  40. 62678889

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