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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 980 · 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. 1.3857² =
  2. 2.657² =
  3. 3.890² =
  4. 4.420² =
  5. 5.650² =
  6. 6.989² =
  7. 7.404² =
  8. 8.1601² =
  9. 9.937² =
  10. 10.199² =
  11. 11.222² =
  12. 12.5021² =
  13. 13.799² =
  14. 14.910² =
  15. 15.644² =
  16. 16.793² =
  17. 17.1629² =
  18. 18.168² =
  19. 19.2130² =
  20. 20.715² =
  21. 21.7624² =
  22. 22.8231² =
  23. 23.691² =
  24. 24.6278² =
  25. 25.103² =
  26. 26.7110² =
  27. 27.267² =
  28. 28.154² =
  29. 29.8523² =
  30. 30.621² =
  31. 31.572² =
  32. 32.860² =
  33. 33.1164² =
  34. 34.850² =
  35. 35.670² =
  36. 36.377² =
  37. 37.9883² =
  38. 38.663² =
  39. 39.168² =
  40. 40.135² =

Answer key

  1. 14876449
  2. 431649
  3. 792100
  4. 176400
  5. 422500
  6. 978121
  7. 163216
  8. 2563201
  9. 877969
  10. 39601
  11. 49284
  12. 25210441
  13. 638401
  14. 828100
  15. 414736
  16. 628849
  17. 2653641
  18. 28224
  19. 4536900
  20. 511225
  21. 58125376
  22. 67749361
  23. 477481
  24. 39413284
  25. 10609
  26. 50552100
  27. 71289
  28. 23716
  29. 72641529
  30. 385641
  31. 327184
  32. 739600
  33. 1354896
  34. 722500
  35. 448900
  36. 142129
  37. 97673689
  38. 439569
  39. 28224
  40. 18225

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