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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 146 · 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. 1.390² =
  2. 2.367² =
  3. 3.694² =
  4. 4.215² =
  5. 5.343² =
  6. 6.238² =
  7. 7.252² =
  8. 8.632² =
  9. 9.375² =
  10. 10.4586² =
  11. 11.7306² =
  12. 12.203² =
  13. 13.683² =
  14. 14.503² =
  15. 15.5326² =
  16. 16.740² =
  17. 17.8919² =
  18. 18.8922² =
  19. 19.3754² =
  20. 20.841² =
  21. 21.519² =
  22. 22.414² =
  23. 23.257² =
  24. 24.536² =
  25. 25.2711² =
  26. 26.482² =
  27. 27.954² =
  28. 28.389² =
  29. 29.665² =
  30. 30.203² =
  31. 31.598² =
  32. 32.958² =
  33. 33.125² =
  34. 34.776² =
  35. 35.365² =
  36. 36.274² =
  37. 37.743² =
  38. 38.1687² =
  39. 39.619² =
  40. 40.255² =

Answer key

  1. 152100
  2. 134689
  3. 481636
  4. 46225
  5. 117649
  6. 56644
  7. 63504
  8. 399424
  9. 140625
  10. 21031396
  11. 53377636
  12. 41209
  13. 466489
  14. 253009
  15. 28366276
  16. 547600
  17. 79548561
  18. 79602084
  19. 14092516
  20. 707281
  21. 269361
  22. 171396
  23. 66049
  24. 287296
  25. 7349521
  26. 232324
  27. 910116
  28. 151321
  29. 442225
  30. 41209
  31. 357604
  32. 917764
  33. 15625
  34. 602176
  35. 133225
  36. 75076
  37. 552049
  38. 2845969
  39. 383161
  40. 65025

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