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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 669 · 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. 1.482² =
  2. 2.734² =
  3. 3.458² =
  4. 4.754² =
  5. 5.6669² =
  6. 6.141² =
  7. 7.180² =
  8. 8.891² =
  9. 9.108² =
  10. 10.8166² =
  11. 11.5582² =
  12. 12.3525² =
  13. 13.557² =
  14. 14.249² =
  15. 15.493² =
  16. 16.352² =
  17. 17.397² =
  18. 18.808² =
  19. 19.333² =
  20. 20.5716² =
  21. 21.4380² =
  22. 22.3523² =
  23. 23.371² =
  24. 24.388² =
  25. 25.178² =
  26. 26.3043² =
  27. 27.528² =
  28. 28.235² =
  29. 29.477² =
  30. 30.742² =
  31. 31.871² =
  32. 32.7910² =
  33. 33.9198² =
  34. 34.1289² =
  35. 35.265² =
  36. 36.265² =
  37. 37.748² =
  38. 38.818² =
  39. 39.5293² =
  40. 40.976² =

Answer key

  1. 232324
  2. 538756
  3. 209764
  4. 568516
  5. 44475561
  6. 19881
  7. 32400
  8. 793881
  9. 11664
  10. 66683556
  11. 31158724
  12. 12425625
  13. 310249
  14. 62001
  15. 243049
  16. 123904
  17. 157609
  18. 652864
  19. 110889
  20. 32672656
  21. 19184400
  22. 12411529
  23. 137641
  24. 150544
  25. 31684
  26. 9259849
  27. 278784
  28. 55225
  29. 227529
  30. 550564
  31. 758641
  32. 62568100
  33. 84603204
  34. 1661521
  35. 70225
  36. 70225
  37. 559504
  38. 669124
  39. 28015849
  40. 952576

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