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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 63 · 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. 1.673² =
  2. 2.913² =
  3. 3.879² =
  4. 4.496² =
  5. 5.105² =
  6. 6.143² =
  7. 7.313² =
  8. 8.968² =
  9. 9.6809² =
  10. 10.977² =
  11. 11.527² =
  12. 12.4151² =
  13. 13.4685² =
  14. 14.711² =
  15. 15.632² =
  16. 16.104² =
  17. 17.7980² =
  18. 18.1724² =
  19. 19.4255² =
  20. 20.899² =
  21. 21.7885² =
  22. 22.305² =
  23. 23.666² =
  24. 24.222² =
  25. 25.568² =
  26. 26.4055² =
  27. 27.9128² =
  28. 28.532² =
  29. 29.329² =
  30. 30.273² =
  31. 31.979² =
  32. 32.931² =
  33. 33.2384² =
  34. 34.737² =
  35. 35.572² =
  36. 36.745² =
  37. 37.806² =
  38. 38.309² =
  39. 39.7369² =
  40. 40.705² =

Answer key

  1. 452929
  2. 833569
  3. 772641
  4. 246016
  5. 11025
  6. 20449
  7. 97969
  8. 937024
  9. 46362481
  10. 954529
  11. 277729
  12. 17230801
  13. 21949225
  14. 505521
  15. 399424
  16. 10816
  17. 63680400
  18. 2972176
  19. 18105025
  20. 808201
  21. 62173225
  22. 93025
  23. 443556
  24. 49284
  25. 322624
  26. 16443025
  27. 83320384
  28. 283024
  29. 108241
  30. 74529
  31. 958441
  32. 866761
  33. 5683456
  34. 543169
  35. 327184
  36. 555025
  37. 649636
  38. 95481
  39. 54302161
  40. 497025

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