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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 505 · 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. 1.736² =
  2. 2.4003² =
  3. 3.360² =
  4. 4.838² =
  5. 5.469² =
  6. 6.783² =
  7. 7.421² =
  8. 8.6476² =
  9. 9.157² =
  10. 10.3134² =
  11. 11.376² =
  12. 12.282² =
  13. 13.5778² =
  14. 14.3653² =
  15. 15.761² =
  16. 16.355² =
  17. 17.5088² =
  18. 18.996² =
  19. 19.363² =
  20. 20.5840² =
  21. 21.641² =
  22. 22.361² =
  23. 23.928² =
  24. 24.570² =
  25. 25.939² =
  26. 26.154² =
  27. 27.180² =
  28. 28.135² =
  29. 29.7180² =
  30. 30.676² =
  31. 31.659² =
  32. 32.560² =
  33. 33.5745² =
  34. 34.382² =
  35. 35.436² =
  36. 36.871² =
  37. 37.306² =
  38. 38.241² =
  39. 39.183² =
  40. 40.154² =

Answer key

  1. 541696
  2. 16024009
  3. 129600
  4. 702244
  5. 219961
  6. 613089
  7. 177241
  8. 41938576
  9. 24649
  10. 9821956
  11. 141376
  12. 79524
  13. 33385284
  14. 13344409
  15. 579121
  16. 126025
  17. 25887744
  18. 992016
  19. 131769
  20. 34105600
  21. 410881
  22. 130321
  23. 861184
  24. 324900
  25. 881721
  26. 23716
  27. 32400
  28. 18225
  29. 51552400
  30. 456976
  31. 434281
  32. 313600
  33. 33005025
  34. 145924
  35. 190096
  36. 758641
  37. 93636
  38. 58081
  39. 33489
  40. 23716

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