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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 787 · 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. 1.295² =
  2. 2.513² =
  3. 3.6002² =
  4. 4.5234² =
  5. 5.534² =
  6. 6.240² =
  7. 7.773² =
  8. 8.3444² =
  9. 9.5353² =
  10. 10.9528² =
  11. 11.497² =
  12. 12.107² =
  13. 13.222² =
  14. 14.615² =
  15. 15.386² =
  16. 16.9595² =
  17. 17.630² =
  18. 18.1564² =
  19. 19.5412² =
  20. 20.2687² =
  21. 21.417² =
  22. 22.356² =
  23. 23.5073² =
  24. 24.367² =
  25. 25.853² =
  26. 26.940² =
  27. 27.809² =
  28. 28.688² =
  29. 29.685² =
  30. 30.651² =
  31. 31.843² =
  32. 32.202² =
  33. 33.562² =
  34. 34.9850² =
  35. 35.335² =
  36. 36.6074² =
  37. 37.737² =
  38. 38.797² =
  39. 39.3847² =
  40. 40.577² =

Answer key

  1. 87025
  2. 263169
  3. 36024004
  4. 27394756
  5. 285156
  6. 57600
  7. 597529
  8. 11861136
  9. 28654609
  10. 90782784
  11. 247009
  12. 11449
  13. 49284
  14. 378225
  15. 148996
  16. 92064025
  17. 396900
  18. 2446096
  19. 29289744
  20. 7219969
  21. 173889
  22. 126736
  23. 25735329
  24. 134689
  25. 727609
  26. 883600
  27. 654481
  28. 473344
  29. 469225
  30. 423801
  31. 710649
  32. 40804
  33. 315844
  34. 97022500
  35. 112225
  36. 36893476
  37. 543169
  38. 635209
  39. 14799409
  40. 332929

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