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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 899 · 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. 1.927² =
  2. 2.160² =
  3. 3.157² =
  4. 4.733² =
  5. 5.410² =
  6. 6.632² =
  7. 7.454² =
  8. 8.368² =
  9. 9.5016² =
  10. 10.389² =
  11. 11.948² =
  12. 12.958² =
  13. 13.511² =
  14. 14.386² =
  15. 15.1374² =
  16. 16.2150² =
  17. 17.436² =
  18. 18.141² =
  19. 19.521² =
  20. 20.5308² =
  21. 21.561² =
  22. 22.448² =
  23. 23.6476² =
  24. 24.139² =
  25. 25.186² =
  26. 26.5263² =
  27. 27.995² =
  28. 28.4304² =
  29. 29.319² =
  30. 30.503² =
  31. 31.5762² =
  32. 32.861² =
  33. 33.350² =
  34. 34.952² =
  35. 35.261² =
  36. 36.237² =
  37. 37.175² =
  38. 38.195² =
  39. 39.301² =
  40. 40.524² =

Answer key

  1. 859329
  2. 25600
  3. 24649
  4. 537289
  5. 168100
  6. 399424
  7. 206116
  8. 135424
  9. 25160256
  10. 151321
  11. 898704
  12. 917764
  13. 261121
  14. 148996
  15. 1887876
  16. 4622500
  17. 190096
  18. 19881
  19. 271441
  20. 28174864
  21. 314721
  22. 200704
  23. 41938576
  24. 19321
  25. 34596
  26. 27699169
  27. 990025
  28. 18524416
  29. 101761
  30. 253009
  31. 33200644
  32. 741321
  33. 122500
  34. 906304
  35. 68121
  36. 56169
  37. 30625
  38. 38025
  39. 90601
  40. 274576

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