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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 584 · 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. 1.253² =
  2. 2.970² =
  3. 3.536² =
  4. 4.348² =
  5. 5.5910² =
  6. 6.343² =
  7. 7.2653² =
  8. 8.543² =
  9. 9.953² =
  10. 10.1538² =
  11. 11.743² =
  12. 12.9711² =
  13. 13.487² =
  14. 14.150² =
  15. 15.1177² =
  16. 16.860² =
  17. 17.130² =
  18. 18.675² =
  19. 19.181² =
  20. 20.533² =
  21. 21.6373² =
  22. 22.921² =
  23. 23.561² =
  24. 24.513² =
  25. 25.608² =
  26. 26.957² =
  27. 27.868² =
  28. 28.713² =
  29. 29.984² =
  30. 30.229² =
  31. 31.1523² =
  32. 32.107² =
  33. 33.5642² =
  34. 34.644² =
  35. 35.8130² =
  36. 36.4145² =
  37. 37.358² =
  38. 38.763² =
  39. 39.724² =
  40. 40.2082² =

Answer key

  1. 64009
  2. 940900
  3. 287296
  4. 121104
  5. 34928100
  6. 117649
  7. 7038409
  8. 294849
  9. 908209
  10. 2365444
  11. 552049
  12. 94303521
  13. 237169
  14. 22500
  15. 1385329
  16. 739600
  17. 16900
  18. 455625
  19. 32761
  20. 284089
  21. 40615129
  22. 848241
  23. 314721
  24. 263169
  25. 369664
  26. 915849
  27. 753424
  28. 508369
  29. 968256
  30. 52441
  31. 2319529
  32. 11449
  33. 31832164
  34. 414736
  35. 66096900
  36. 17181025
  37. 128164
  38. 582169
  39. 524176
  40. 4334724

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