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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 607 · 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. 1.710² =
  2. 2.330² =
  3. 3.632² =
  4. 4.429² =
  5. 5.531² =
  6. 6.254² =
  7. 7.5772² =
  8. 8.446² =
  9. 9.480² =
  10. 10.336² =
  11. 11.446² =
  12. 12.451² =
  13. 13.6164² =
  14. 14.6784² =
  15. 15.328² =
  16. 16.6722² =
  17. 17.579² =
  18. 18.1840² =
  19. 19.287² =
  20. 20.202² =
  21. 21.428² =
  22. 22.3146² =
  23. 23.137² =
  24. 24.442² =
  25. 25.1335² =
  26. 26.960² =
  27. 27.2248² =
  28. 28.204² =
  29. 29.220² =
  30. 30.886² =
  31. 31.2552² =
  32. 32.167² =
  33. 33.4365² =
  34. 34.111² =
  35. 35.4466² =
  36. 36.442² =
  37. 37.553² =
  38. 38.895² =
  39. 39.1241² =
  40. 40.618² =

Answer key

  1. 504100
  2. 108900
  3. 399424
  4. 184041
  5. 281961
  6. 64516
  7. 33315984
  8. 198916
  9. 230400
  10. 112896
  11. 198916
  12. 203401
  13. 37994896
  14. 46022656
  15. 107584
  16. 45185284
  17. 335241
  18. 3385600
  19. 82369
  20. 40804
  21. 183184
  22. 9897316
  23. 18769
  24. 195364
  25. 1782225
  26. 921600
  27. 5053504
  28. 41616
  29. 48400
  30. 784996
  31. 6512704
  32. 27889
  33. 19053225
  34. 12321
  35. 19945156
  36. 195364
  37. 305809
  38. 801025
  39. 1540081
  40. 381924

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