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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 674 · 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. 1.335² =
  2. 2.947² =
  3. 3.753² =
  4. 4.810² =
  5. 5.729² =
  6. 6.8676² =
  7. 7.900² =
  8. 8.8218² =
  9. 9.154² =
  10. 10.672² =
  11. 11.6664² =
  12. 12.9568² =
  13. 13.2990² =
  14. 14.745² =
  15. 15.258² =
  16. 16.662² =
  17. 17.839² =
  18. 18.8022² =
  19. 19.848² =
  20. 20.3501² =
  21. 21.349² =
  22. 22.869² =
  23. 23.951² =
  24. 24.7606² =
  25. 25.320² =
  26. 26.4911² =
  27. 27.602² =
  28. 28.691² =
  29. 29.4598² =
  30. 30.444² =
  31. 31.730² =
  32. 32.1023² =
  33. 33.281² =
  34. 34.1598² =
  35. 35.9687² =
  36. 36.195² =
  37. 37.1107² =
  38. 38.7534² =
  39. 39.335² =
  40. 40.472² =

Answer key

  1. 112225
  2. 896809
  3. 567009
  4. 656100
  5. 531441
  6. 75272976
  7. 810000
  8. 67535524
  9. 23716
  10. 451584
  11. 44408896
  12. 91546624
  13. 8940100
  14. 555025
  15. 66564
  16. 438244
  17. 703921
  18. 64352484
  19. 719104
  20. 12257001
  21. 121801
  22. 755161
  23. 904401
  24. 57851236
  25. 102400
  26. 24117921
  27. 362404
  28. 477481
  29. 21141604
  30. 197136
  31. 532900
  32. 1046529
  33. 78961
  34. 2553604
  35. 93837969
  36. 38025
  37. 1225449
  38. 56761156
  39. 112225
  40. 222784

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