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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 93 · 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. 1.444² =
  2. 2.9436² =
  3. 3.697² =
  4. 4.460² =
  5. 5.130² =
  6. 6.113² =
  7. 7.8927² =
  8. 8.513² =
  9. 9.551² =
  10. 10.3293² =
  11. 11.1248² =
  12. 12.726² =
  13. 13.4023² =
  14. 14.333² =
  15. 15.450² =
  16. 16.2065² =
  17. 17.2922² =
  18. 18.350² =
  19. 19.431² =
  20. 20.304² =
  21. 21.769² =
  22. 22.737² =
  23. 23.258² =
  24. 24.132² =
  25. 25.543² =
  26. 26.907² =
  27. 27.261² =
  28. 28.598² =
  29. 29.722² =
  30. 30.611² =
  31. 31.644² =
  32. 32.571² =
  33. 33.681² =
  34. 34.3143² =
  35. 35.607² =
  36. 36.317² =
  37. 37.239² =
  38. 38.135² =
  39. 39.724² =
  40. 40.676² =

Answer key

  1. 197136
  2. 89038096
  3. 485809
  4. 211600
  5. 16900
  6. 12769
  7. 79691329
  8. 263169
  9. 303601
  10. 10843849
  11. 1557504
  12. 527076
  13. 16184529
  14. 110889
  15. 202500
  16. 4264225
  17. 8538084
  18. 122500
  19. 185761
  20. 92416
  21. 591361
  22. 543169
  23. 66564
  24. 17424
  25. 294849
  26. 822649
  27. 68121
  28. 357604
  29. 521284
  30. 373321
  31. 414736
  32. 326041
  33. 463761
  34. 9878449
  35. 368449
  36. 100489
  37. 57121
  38. 18225
  39. 524176
  40. 456976

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