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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 267 · 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. 1.789² =
  2. 2.442² =
  3. 3.7795² =
  4. 4.749² =
  5. 5.745² =
  6. 6.871² =
  7. 7.717² =
  8. 8.5542² =
  9. 9.118² =
  10. 10.488² =
  11. 11.167² =
  12. 12.616² =
  13. 13.7703² =
  14. 14.394² =
  15. 15.213² =
  16. 16.156² =
  17. 17.840² =
  18. 18.129² =
  19. 19.554² =
  20. 20.469² =
  21. 21.880² =
  22. 22.8310² =
  23. 23.926² =
  24. 24.213² =
  25. 25.4860² =
  26. 26.229² =
  27. 27.316² =
  28. 28.8382² =
  29. 29.850² =
  30. 30.7729² =
  31. 31.956² =
  32. 32.6977² =
  33. 33.8939² =
  34. 34.201² =
  35. 35.215² =
  36. 36.708² =
  37. 37.4178² =
  38. 38.7254² =
  39. 39.2963² =
  40. 40.2779² =

Answer key

  1. 622521
  2. 195364
  3. 60762025
  4. 561001
  5. 555025
  6. 758641
  7. 514089
  8. 30713764
  9. 13924
  10. 238144
  11. 27889
  12. 379456
  13. 59336209
  14. 155236
  15. 45369
  16. 24336
  17. 705600
  18. 16641
  19. 306916
  20. 219961
  21. 774400
  22. 69056100
  23. 857476
  24. 45369
  25. 23619600
  26. 52441
  27. 99856
  28. 70257924
  29. 722500
  30. 59737441
  31. 913936
  32. 48678529
  33. 79905721
  34. 40401
  35. 46225
  36. 501264
  37. 17455684
  38. 52620516
  39. 8779369
  40. 7722841

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