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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 124 · 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. 1.5639² =
  2. 2.8702² =
  3. 3.160² =
  4. 4.771² =
  5. 5.866² =
  6. 6.405² =
  7. 7.290² =
  8. 8.109² =
  9. 9.248² =
  10. 10.849² =
  11. 11.804² =
  12. 12.5646² =
  13. 13.224² =
  14. 14.158² =
  15. 15.297² =
  16. 16.4333² =
  17. 17.746² =
  18. 18.151² =
  19. 19.359² =
  20. 20.231² =
  21. 21.441² =
  22. 22.725² =
  23. 23.410² =
  24. 24.9355² =
  25. 25.843² =
  26. 26.776² =
  27. 27.893² =
  28. 28.872² =
  29. 29.7935² =
  30. 30.662² =
  31. 31.284² =
  32. 32.799² =
  33. 33.8617² =
  34. 34.5315² =
  35. 35.384² =
  36. 36.799² =
  37. 37.258² =
  38. 38.999² =
  39. 39.457² =
  40. 40.337² =

Answer key

  1. 31798321
  2. 75724804
  3. 25600
  4. 594441
  5. 749956
  6. 164025
  7. 84100
  8. 11881
  9. 61504
  10. 720801
  11. 646416
  12. 31877316
  13. 50176
  14. 24964
  15. 88209
  16. 18774889
  17. 556516
  18. 22801
  19. 128881
  20. 53361
  21. 194481
  22. 525625
  23. 168100
  24. 87516025
  25. 710649
  26. 602176
  27. 797449
  28. 760384
  29. 62964225
  30. 438244
  31. 80656
  32. 638401
  33. 74252689
  34. 28249225
  35. 147456
  36. 638401
  37. 66564
  38. 998001
  39. 208849
  40. 113569

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