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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 770 · 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. 1.1264² =
  2. 2.117² =
  3. 3.896² =
  4. 4.201² =
  5. 5.6851² =
  6. 6.503² =
  7. 7.191² =
  8. 8.390² =
  9. 9.2984² =
  10. 10.532² =
  11. 11.451² =
  12. 12.227² =
  13. 13.9564² =
  14. 14.947² =
  15. 15.135² =
  16. 16.6316² =
  17. 17.2016² =
  18. 18.8332² =
  19. 19.517² =
  20. 20.5545² =
  21. 21.831² =
  22. 22.2206² =
  23. 23.815² =
  24. 24.412² =
  25. 25.721² =
  26. 26.167² =
  27. 27.994² =
  28. 28.2756² =
  29. 29.812² =
  30. 30.296² =
  31. 31.586² =
  32. 32.3162² =
  33. 33.473² =
  34. 34.676² =
  35. 35.762² =
  36. 36.273² =
  37. 37.253² =
  38. 38.288² =
  39. 39.806² =
  40. 40.280² =

Answer key

  1. 1597696
  2. 13689
  3. 802816
  4. 40401
  5. 46936201
  6. 253009
  7. 36481
  8. 152100
  9. 8904256
  10. 283024
  11. 203401
  12. 51529
  13. 91470096
  14. 896809
  15. 18225
  16. 39891856
  17. 4064256
  18. 69422224
  19. 267289
  20. 30747025
  21. 690561
  22. 4866436
  23. 664225
  24. 169744
  25. 519841
  26. 27889
  27. 988036
  28. 7595536
  29. 659344
  30. 87616
  31. 343396
  32. 9998244
  33. 223729
  34. 456976
  35. 580644
  36. 74529
  37. 64009
  38. 82944
  39. 649636
  40. 78400

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