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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 316 · 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. 1.7674² =
  2. 2.595² =
  3. 3.190² =
  4. 4.906² =
  5. 5.7743² =
  6. 6.807² =
  7. 7.6560² =
  8. 8.181² =
  9. 9.495² =
  10. 10.564² =
  11. 11.445² =
  12. 12.675² =
  13. 13.206² =
  14. 14.106² =
  15. 15.871² =
  16. 16.823² =
  17. 17.183² =
  18. 18.117² =
  19. 19.720² =
  20. 20.171² =
  21. 21.504² =
  22. 22.667² =
  23. 23.377² =
  24. 24.363² =
  25. 25.3197² =
  26. 26.3337² =
  27. 27.583² =
  28. 28.536² =
  29. 29.260² =
  30. 30.472² =
  31. 31.3729² =
  32. 32.610² =
  33. 33.2803² =
  34. 34.8585² =
  35. 35.752² =
  36. 36.962² =
  37. 37.8383² =
  38. 38.484² =
  39. 39.252² =
  40. 40.1501² =

Answer key

  1. 58890276
  2. 354025
  3. 36100
  4. 820836
  5. 59954049
  6. 651249
  7. 43033600
  8. 32761
  9. 245025
  10. 318096
  11. 198025
  12. 455625
  13. 42436
  14. 11236
  15. 758641
  16. 677329
  17. 33489
  18. 13689
  19. 518400
  20. 29241
  21. 254016
  22. 444889
  23. 142129
  24. 131769
  25. 10220809
  26. 11135569
  27. 339889
  28. 287296
  29. 67600
  30. 222784
  31. 13905441
  32. 372100
  33. 7856809
  34. 73702225
  35. 565504
  36. 925444
  37. 70274689
  38. 234256
  39. 63504
  40. 2253001

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