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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 135 · 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. 1.152² =
  2. 2.264² =
  3. 3.7195² =
  4. 4.775² =
  5. 5.2195² =
  6. 6.268² =
  7. 7.685² =
  8. 8.4509² =
  9. 9.704² =
  10. 10.587² =
  11. 11.426² =
  12. 12.3135² =
  13. 13.340² =
  14. 14.409² =
  15. 15.452² =
  16. 16.319² =
  17. 17.304² =
  18. 18.743² =
  19. 19.8026² =
  20. 20.2475² =
  21. 21.131² =
  22. 22.172² =
  23. 23.541² =
  24. 24.141² =
  25. 25.3469² =
  26. 26.410² =
  27. 27.7912² =
  28. 28.738² =
  29. 29.1871² =
  30. 30.567² =
  31. 31.3906² =
  32. 32.1879² =
  33. 33.837² =
  34. 34.527² =
  35. 35.3254² =
  36. 36.557² =
  37. 37.9461² =
  38. 38.3766² =
  39. 39.7211² =
  40. 40.523² =

Answer key

  1. 23104
  2. 69696
  3. 51768025
  4. 600625
  5. 4818025
  6. 71824
  7. 469225
  8. 20331081
  9. 495616
  10. 344569
  11. 181476
  12. 9828225
  13. 115600
  14. 167281
  15. 204304
  16. 101761
  17. 92416
  18. 552049
  19. 64416676
  20. 6125625
  21. 17161
  22. 29584
  23. 292681
  24. 19881
  25. 12033961
  26. 168100
  27. 62599744
  28. 544644
  29. 3500641
  30. 321489
  31. 15256836
  32. 3530641
  33. 700569
  34. 277729
  35. 10588516
  36. 310249
  37. 89510521
  38. 14182756
  39. 51998521
  40. 273529

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