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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 587 · 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. 1.600² =
  2. 2.1458² =
  3. 3.9035² =
  4. 4.5923² =
  5. 5.784² =
  6. 6.8498² =
  7. 7.854² =
  8. 8.677² =
  9. 9.994² =
  10. 10.691² =
  11. 11.290² =
  12. 12.415² =
  13. 13.6734² =
  14. 14.7572² =
  15. 15.5911² =
  16. 16.138² =
  17. 17.287² =
  18. 18.6603² =
  19. 19.819² =
  20. 20.649² =
  21. 21.8555² =
  22. 22.215² =
  23. 23.409² =
  24. 24.111² =
  25. 25.411² =
  26. 26.255² =
  27. 27.571² =
  28. 28.5375² =
  29. 29.9505² =
  30. 30.728² =
  31. 31.150² =
  32. 32.3686² =
  33. 33.115² =
  34. 34.7300² =
  35. 35.9325² =
  36. 36.375² =
  37. 37.314² =
  38. 38.7691² =
  39. 39.149² =
  40. 40.788² =

Answer key

  1. 360000
  2. 2125764
  3. 81631225
  4. 35081929
  5. 614656
  6. 72216004
  7. 729316
  8. 458329
  9. 988036
  10. 477481
  11. 84100
  12. 172225
  13. 45346756
  14. 57335184
  15. 34939921
  16. 19044
  17. 82369
  18. 43599609
  19. 670761
  20. 421201
  21. 73188025
  22. 46225
  23. 167281
  24. 12321
  25. 168921
  26. 65025
  27. 326041
  28. 28890625
  29. 90345025
  30. 529984
  31. 22500
  32. 13586596
  33. 13225
  34. 53290000
  35. 86955625
  36. 140625
  37. 98596
  38. 59151481
  39. 22201
  40. 620944

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