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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 647 · 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. 1.3087² =
  2. 2.619² =
  3. 3.9833² =
  4. 4.225² =
  5. 5.329² =
  6. 6.354² =
  7. 7.832² =
  8. 8.868² =
  9. 9.4354² =
  10. 10.699² =
  11. 11.252² =
  12. 12.753² =
  13. 13.7226² =
  14. 14.296² =
  15. 15.282² =
  16. 16.770² =
  17. 17.885² =
  18. 18.4286² =
  19. 19.3021² =
  20. 20.474² =
  21. 21.1262² =
  22. 22.7593² =
  23. 23.725² =
  24. 24.352² =
  25. 25.6885² =
  26. 26.308² =
  27. 27.1633² =
  28. 28.543² =
  29. 29.311² =
  30. 30.261² =
  31. 31.9123² =
  32. 32.271² =
  33. 33.507² =
  34. 34.338² =
  35. 35.548² =
  36. 36.8729² =
  37. 37.577² =
  38. 38.507² =
  39. 39.395² =
  40. 40.204² =

Answer key

  1. 9529569
  2. 383161
  3. 96687889
  4. 50625
  5. 108241
  6. 125316
  7. 692224
  8. 753424
  9. 18957316
  10. 488601
  11. 63504
  12. 567009
  13. 52215076
  14. 87616
  15. 79524
  16. 592900
  17. 783225
  18. 18369796
  19. 9126441
  20. 224676
  21. 1592644
  22. 57653649
  23. 525625
  24. 123904
  25. 47403225
  26. 94864
  27. 2666689
  28. 294849
  29. 96721
  30. 68121
  31. 83229129
  32. 73441
  33. 257049
  34. 114244
  35. 300304
  36. 76195441
  37. 332929
  38. 257049
  39. 156025
  40. 41616

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