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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 8 · 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. 1.8986² =
  2. 2.356² =
  3. 3.597² =
  4. 4.8052² =
  5. 5.3353² =
  6. 6.426² =
  7. 7.250² =
  8. 8.253² =
  9. 9.781² =
  10. 10.876² =
  11. 11.859² =
  12. 12.584² =
  13. 13.698² =
  14. 14.5352² =
  15. 15.3957² =
  16. 16.3405² =
  17. 17.452² =
  18. 18.199² =
  19. 19.548² =
  20. 20.221² =
  21. 21.279² =
  22. 22.256² =
  23. 23.515² =
  24. 24.229² =
  25. 25.368² =
  26. 26.148² =
  27. 27.686² =
  28. 28.754² =
  29. 29.952² =
  30. 30.6956² =
  31. 31.287² =
  32. 32.977² =
  33. 33.822² =
  34. 34.226² =
  35. 35.863² =
  36. 36.234² =
  37. 37.570² =
  38. 38.443² =
  39. 39.115² =
  40. 40.153² =

Answer key

  1. 80748196
  2. 126736
  3. 356409
  4. 64834704
  5. 11242609
  6. 181476
  7. 62500
  8. 64009
  9. 609961
  10. 767376
  11. 737881
  12. 341056
  13. 487204
  14. 28643904
  15. 15657849
  16. 11594025
  17. 204304
  18. 39601
  19. 300304
  20. 48841
  21. 77841
  22. 65536
  23. 265225
  24. 52441
  25. 135424
  26. 21904
  27. 470596
  28. 568516
  29. 906304
  30. 48385936
  31. 82369
  32. 954529
  33. 675684
  34. 51076
  35. 744769
  36. 54756
  37. 324900
  38. 196249
  39. 13225
  40. 23409

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