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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 883 · 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. 1.938² =
  2. 2.382² =
  3. 3.283² =
  4. 4.2410² =
  5. 5.452² =
  6. 6.363² =
  7. 7.284² =
  8. 8.8035² =
  9. 9.291² =
  10. 10.873² =
  11. 11.900² =
  12. 12.952² =
  13. 13.827² =
  14. 14.842² =
  15. 15.213² =
  16. 16.737² =
  17. 17.114² =
  18. 18.3094² =
  19. 19.5266² =
  20. 20.981² =
  21. 21.766² =
  22. 22.3117² =
  23. 23.634² =
  24. 24.952² =
  25. 25.237² =
  26. 26.289² =
  27. 27.291² =
  28. 28.513² =
  29. 29.826² =
  30. 30.9527² =
  31. 31.9862² =
  32. 32.5353² =
  33. 33.548² =
  34. 34.6845² =
  35. 35.472² =
  36. 36.859² =
  37. 37.9580² =
  38. 38.140² =
  39. 39.6011² =
  40. 40.399² =

Answer key

  1. 879844
  2. 145924
  3. 80089
  4. 5808100
  5. 204304
  6. 131769
  7. 80656
  8. 64561225
  9. 84681
  10. 762129
  11. 810000
  12. 906304
  13. 683929
  14. 708964
  15. 45369
  16. 543169
  17. 12996
  18. 9572836
  19. 27730756
  20. 962361
  21. 586756
  22. 9715689
  23. 401956
  24. 906304
  25. 56169
  26. 83521
  27. 84681
  28. 263169
  29. 682276
  30. 90763729
  31. 97259044
  32. 28654609
  33. 300304
  34. 46854025
  35. 222784
  36. 737881
  37. 91776400
  38. 19600
  39. 36132121
  40. 159201

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