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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 824 · 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. 1.340² =
  2. 2.546² =
  3. 3.225² =
  4. 4.153² =
  5. 5.370² =
  6. 6.566² =
  7. 7.350² =
  8. 8.778² =
  9. 9.137² =
  10. 10.657² =
  11. 11.935² =
  12. 12.2450² =
  13. 13.677² =
  14. 14.981² =
  15. 15.757² =
  16. 16.525² =
  17. 17.1135² =
  18. 18.4918² =
  19. 19.7642² =
  20. 20.9835² =
  21. 21.534² =
  22. 22.3785² =
  23. 23.231² =
  24. 24.1223² =
  25. 25.989² =
  26. 26.167² =
  27. 27.989² =
  28. 28.721² =
  29. 29.5466² =
  30. 30.177² =
  31. 31.460² =
  32. 32.696² =
  33. 33.537² =
  34. 34.5844² =
  35. 35.598² =
  36. 36.858² =
  37. 37.556² =
  38. 38.829² =
  39. 39.632² =
  40. 40.690² =

Answer key

  1. 115600
  2. 298116
  3. 50625
  4. 23409
  5. 136900
  6. 320356
  7. 122500
  8. 605284
  9. 18769
  10. 431649
  11. 874225
  12. 6002500
  13. 458329
  14. 962361
  15. 573049
  16. 275625
  17. 1288225
  18. 24186724
  19. 58400164
  20. 96727225
  21. 285156
  22. 14326225
  23. 53361
  24. 1495729
  25. 978121
  26. 27889
  27. 978121
  28. 519841
  29. 29877156
  30. 31329
  31. 211600
  32. 484416
  33. 288369
  34. 34152336
  35. 357604
  36. 736164
  37. 309136
  38. 687241
  39. 399424
  40. 476100

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