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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 910 · 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. 1.670² =
  2. 2.473² =
  3. 3.771² =
  4. 4.7953² =
  5. 5.355² =
  6. 6.5575² =
  7. 7.6236² =
  8. 8.714² =
  9. 9.429² =
  10. 10.7314² =
  11. 11.718² =
  12. 12.510² =
  13. 13.860² =
  14. 14.164² =
  15. 15.657² =
  16. 16.4533² =
  17. 17.8984² =
  18. 18.8073² =
  19. 19.529² =
  20. 20.809² =
  21. 21.222² =
  22. 22.442² =
  23. 23.8004² =
  24. 24.999² =
  25. 25.642² =
  26. 26.700² =
  27. 27.4313² =
  28. 28.716² =
  29. 29.570² =
  30. 30.760² =
  31. 31.996² =
  32. 32.258² =
  33. 33.9815² =
  34. 34.595² =
  35. 35.2230² =
  36. 36.873² =
  37. 37.963² =
  38. 38.1327² =
  39. 39.498² =
  40. 40.275² =

Answer key

  1. 448900
  2. 223729
  3. 594441
  4. 63250209
  5. 126025
  6. 31080625
  7. 38887696
  8. 509796
  9. 184041
  10. 53494596
  11. 515524
  12. 260100
  13. 739600
  14. 26896
  15. 431649
  16. 20548089
  17. 80712256
  18. 65173329
  19. 279841
  20. 654481
  21. 49284
  22. 195364
  23. 64064016
  24. 998001
  25. 412164
  26. 490000
  27. 18601969
  28. 512656
  29. 324900
  30. 577600
  31. 992016
  32. 66564
  33. 96334225
  34. 354025
  35. 4972900
  36. 762129
  37. 927369
  38. 1760929
  39. 248004
  40. 75625

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