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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 611 · 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. 1.202² =
  2. 2.441² =
  3. 3.2134² =
  4. 4.181² =
  5. 5.208² =
  6. 6.2660² =
  7. 7.738² =
  8. 8.266² =
  9. 9.831² =
  10. 10.216² =
  11. 11.666² =
  12. 12.215² =
  13. 13.7117² =
  14. 14.104² =
  15. 15.845² =
  16. 16.658² =
  17. 17.8827² =
  18. 18.800² =
  19. 19.605² =
  20. 20.925² =
  21. 21.3178² =
  22. 22.384² =
  23. 23.554² =
  24. 24.2693² =
  25. 25.5673² =
  26. 26.281² =
  27. 27.965² =
  28. 28.844² =
  29. 29.371² =
  30. 30.354² =
  31. 31.9360² =
  32. 32.284² =
  33. 33.317² =
  34. 34.715² =
  35. 35.723² =
  36. 36.928² =
  37. 37.889² =
  38. 38.272² =
  39. 39.914² =
  40. 40.816² =

Answer key

  1. 40804
  2. 194481
  3. 4553956
  4. 32761
  5. 43264
  6. 7075600
  7. 544644
  8. 70756
  9. 690561
  10. 46656
  11. 443556
  12. 46225
  13. 50651689
  14. 10816
  15. 714025
  16. 432964
  17. 77915929
  18. 640000
  19. 366025
  20. 855625
  21. 10099684
  22. 147456
  23. 306916
  24. 7252249
  25. 32182929
  26. 78961
  27. 931225
  28. 712336
  29. 137641
  30. 125316
  31. 87609600
  32. 80656
  33. 100489
  34. 511225
  35. 522729
  36. 861184
  37. 790321
  38. 73984
  39. 835396
  40. 665856

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