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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 479 · 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. 1.4122² =
  2. 2.745² =
  3. 3.710² =
  4. 4.2262² =
  5. 5.423² =
  6. 6.3576² =
  7. 7.788² =
  8. 8.3500² =
  9. 9.943² =
  10. 10.484² =
  11. 11.495² =
  12. 12.652² =
  13. 13.7382² =
  14. 14.6408² =
  15. 15.314² =
  16. 16.504² =
  17. 17.5547² =
  18. 18.9694² =
  19. 19.891² =
  20. 20.740² =
  21. 21.988² =
  22. 22.876² =
  23. 23.718² =
  24. 24.718² =
  25. 25.523² =
  26. 26.693² =
  27. 27.3162² =
  28. 28.917² =
  29. 29.199² =
  30. 30.125² =
  31. 31.252² =
  32. 32.9574² =
  33. 33.2963² =
  34. 34.4256² =
  35. 35.606² =
  36. 36.201² =
  37. 37.529² =
  38. 38.131² =
  39. 39.337² =
  40. 40.213² =

Answer key

  1. 16990884
  2. 555025
  3. 504100
  4. 5116644
  5. 178929
  6. 12787776
  7. 620944
  8. 12250000
  9. 889249
  10. 234256
  11. 245025
  12. 425104
  13. 54493924
  14. 41062464
  15. 98596
  16. 254016
  17. 30769209
  18. 93973636
  19. 793881
  20. 547600
  21. 976144
  22. 767376
  23. 515524
  24. 515524
  25. 273529
  26. 480249
  27. 9998244
  28. 840889
  29. 39601
  30. 15625
  31. 63504
  32. 91661476
  33. 8779369
  34. 18113536
  35. 367236
  36. 40401
  37. 279841
  38. 17161
  39. 113569
  40. 45369

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