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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 781 · 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. 1.989² =
  2. 2.184² =
  3. 3.845² =
  4. 4.4261² =
  5. 5.210² =
  6. 6.9323² =
  7. 7.3179² =
  8. 8.7497² =
  9. 9.499² =
  10. 10.397² =
  11. 11.226² =
  12. 12.817² =
  13. 13.150² =
  14. 14.345² =
  15. 15.638² =
  16. 16.151² =
  17. 17.2901² =
  18. 18.1070² =
  19. 19.479² =
  20. 20.299² =
  21. 21.195² =
  22. 22.717² =
  23. 23.231² =
  24. 24.770² =
  25. 25.837² =
  26. 26.6209² =
  27. 27.434² =
  28. 28.434² =
  29. 29.4453² =
  30. 30.334² =
  31. 31.169² =
  32. 32.103² =
  33. 33.354² =
  34. 34.4591² =
  35. 35.402² =
  36. 36.274² =
  37. 37.794² =
  38. 38.758² =
  39. 39.343² =
  40. 40.265² =

Answer key

  1. 978121
  2. 33856
  3. 714025
  4. 18156121
  5. 44100
  6. 86918329
  7. 10106041
  8. 56205009
  9. 249001
  10. 157609
  11. 51076
  12. 667489
  13. 22500
  14. 119025
  15. 407044
  16. 22801
  17. 8415801
  18. 1144900
  19. 229441
  20. 89401
  21. 38025
  22. 514089
  23. 53361
  24. 592900
  25. 700569
  26. 38551681
  27. 188356
  28. 188356
  29. 19829209
  30. 111556
  31. 28561
  32. 10609
  33. 125316
  34. 21077281
  35. 161604
  36. 75076
  37. 630436
  38. 574564
  39. 117649
  40. 70225

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