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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 594 · 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. 1.161² =
  2. 2.2418² =
  3. 3.934² =
  4. 4.445² =
  5. 5.916² =
  6. 6.7214² =
  7. 7.173² =
  8. 8.139² =
  9. 9.941² =
  10. 10.316² =
  11. 11.947² =
  12. 12.907² =
  13. 13.899² =
  14. 14.589² =
  15. 15.136² =
  16. 16.9170² =
  17. 17.877² =
  18. 18.623² =
  19. 19.459² =
  20. 20.2744² =
  21. 21.1571² =
  22. 22.144² =
  23. 23.368² =
  24. 24.992² =
  25. 25.855² =
  26. 26.765² =
  27. 27.992² =
  28. 28.181² =
  29. 29.990² =
  30. 30.1997² =
  31. 31.808² =
  32. 32.648² =
  33. 33.718² =
  34. 34.6537² =
  35. 35.1249² =
  36. 36.733² =
  37. 37.811² =
  38. 38.501² =
  39. 39.1909² =
  40. 40.229² =

Answer key

  1. 25921
  2. 5846724
  3. 872356
  4. 198025
  5. 839056
  6. 52041796
  7. 29929
  8. 19321
  9. 885481
  10. 99856
  11. 896809
  12. 822649
  13. 808201
  14. 346921
  15. 18496
  16. 84088900
  17. 769129
  18. 388129
  19. 210681
  20. 7529536
  21. 2468041
  22. 20736
  23. 135424
  24. 984064
  25. 731025
  26. 585225
  27. 984064
  28. 32761
  29. 980100
  30. 3988009
  31. 652864
  32. 419904
  33. 515524
  34. 42732369
  35. 1560001
  36. 537289
  37. 657721
  38. 251001
  39. 3644281
  40. 52441

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