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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 44 · 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. 1.671² =
  2. 2.7966² =
  3. 3.748² =
  4. 4.363² =
  5. 5.454² =
  6. 6.8207² =
  7. 7.133² =
  8. 8.205² =
  9. 9.105² =
  10. 10.429² =
  11. 11.105² =
  12. 12.215² =
  13. 13.220² =
  14. 14.952² =
  15. 15.745² =
  16. 16.593² =
  17. 17.244² =
  18. 18.505² =
  19. 19.169² =
  20. 20.799² =
  21. 21.818² =
  22. 22.233² =
  23. 23.4509² =
  24. 24.245² =
  25. 25.7639² =
  26. 26.107² =
  27. 27.1178² =
  28. 28.627² =
  29. 29.878² =
  30. 30.981² =
  31. 31.2631² =
  32. 32.121² =
  33. 33.829² =
  34. 34.606² =
  35. 35.674² =
  36. 36.5841² =
  37. 37.558² =
  38. 38.311² =
  39. 39.4375² =
  40. 40.203² =

Answer key

  1. 450241
  2. 63457156
  3. 559504
  4. 131769
  5. 206116
  6. 67354849
  7. 17689
  8. 42025
  9. 11025
  10. 184041
  11. 11025
  12. 46225
  13. 48400
  14. 906304
  15. 555025
  16. 351649
  17. 59536
  18. 255025
  19. 28561
  20. 638401
  21. 669124
  22. 54289
  23. 20331081
  24. 60025
  25. 58354321
  26. 11449
  27. 1387684
  28. 393129
  29. 770884
  30. 962361
  31. 6922161
  32. 14641
  33. 687241
  34. 367236
  35. 454276
  36. 34117281
  37. 311364
  38. 96721
  39. 19140625
  40. 41209

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