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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 425 · 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. 1.768² =
  2. 2.707² =
  3. 3.268² =
  4. 4.7882² =
  5. 5.846² =
  6. 6.262² =
  7. 7.975² =
  8. 8.830² =
  9. 9.527² =
  10. 10.1321² =
  11. 11.2563² =
  12. 12.2909² =
  13. 13.2992² =
  14. 14.951² =
  15. 15.805² =
  16. 16.380² =
  17. 17.236² =
  18. 18.521² =
  19. 19.572² =
  20. 20.6670² =
  21. 21.258² =
  22. 22.886² =
  23. 23.765² =
  24. 24.5176² =
  25. 25.223² =
  26. 26.165² =
  27. 27.2610² =
  28. 28.3447² =
  29. 29.464² =
  30. 30.2283² =
  31. 31.8346² =
  32. 32.997² =
  33. 33.695² =
  34. 34.465² =
  35. 35.691² =
  36. 36.5135² =
  37. 37.949² =
  38. 38.408² =
  39. 39.839² =
  40. 40.6758² =

Answer key

  1. 589824
  2. 499849
  3. 71824
  4. 62125924
  5. 715716
  6. 68644
  7. 950625
  8. 688900
  9. 277729
  10. 1745041
  11. 6568969
  12. 8462281
  13. 8952064
  14. 904401
  15. 648025
  16. 144400
  17. 55696
  18. 271441
  19. 327184
  20. 44488900
  21. 66564
  22. 784996
  23. 585225
  24. 26790976
  25. 49729
  26. 27225
  27. 6812100
  28. 11881809
  29. 215296
  30. 5212089
  31. 69655716
  32. 994009
  33. 483025
  34. 216225
  35. 477481
  36. 26368225
  37. 900601
  38. 166464
  39. 703921
  40. 45670564

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