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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 156 · 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. 1.1676² =
  2. 2.760² =
  3. 3.3708² =
  4. 4.581² =
  5. 5.782² =
  6. 6.718² =
  7. 7.7660² =
  8. 8.2351² =
  9. 9.6299² =
  10. 10.983² =
  11. 11.3510² =
  12. 12.5496² =
  13. 13.4012² =
  14. 14.1815² =
  15. 15.208² =
  16. 16.3735² =
  17. 17.609² =
  18. 18.4315² =
  19. 19.745² =
  20. 20.893² =
  21. 21.9963² =
  22. 22.3576² =
  23. 23.493² =
  24. 24.623² =
  25. 25.2018² =
  26. 26.512² =
  27. 27.153² =
  28. 28.5125² =
  29. 29.980² =
  30. 30.133² =
  31. 31.619² =
  32. 32.759² =
  33. 33.979² =
  34. 34.719² =
  35. 35.847² =
  36. 36.2978² =
  37. 37.134² =
  38. 38.4350² =
  39. 39.636² =
  40. 40.5521² =

Answer key

  1. 2808976
  2. 577600
  3. 13749264
  4. 337561
  5. 611524
  6. 515524
  7. 58675600
  8. 5527201
  9. 39677401
  10. 966289
  11. 12320100
  12. 30206016
  13. 16096144
  14. 3294225
  15. 43264
  16. 13950225
  17. 370881
  18. 18619225
  19. 555025
  20. 797449
  21. 99261369
  22. 12787776
  23. 243049
  24. 388129
  25. 4072324
  26. 262144
  27. 23409
  28. 26265625
  29. 960400
  30. 17689
  31. 383161
  32. 576081
  33. 958441
  34. 516961
  35. 717409
  36. 8868484
  37. 17956
  38. 18922500
  39. 404496
  40. 30481441

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