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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 836 · 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. 1.357² =
  2. 2.277² =
  3. 3.528² =
  4. 4.1108² =
  5. 5.355² =
  6. 6.9919² =
  7. 7.9985² =
  8. 8.237² =
  9. 9.658² =
  10. 10.763² =
  11. 11.5861² =
  12. 12.107² =
  13. 13.4084² =
  14. 14.120² =
  15. 15.618² =
  16. 16.595² =
  17. 17.428² =
  18. 18.947² =
  19. 19.459² =
  20. 20.2951² =
  21. 21.825² =
  22. 22.787² =
  23. 23.2268² =
  24. 24.231² =
  25. 25.880² =
  26. 26.9822² =
  27. 27.224² =
  28. 28.263² =
  29. 29.250² =
  30. 30.431² =
  31. 31.5233² =
  32. 32.105² =
  33. 33.177² =
  34. 34.8691² =
  35. 35.1941² =
  36. 36.962² =
  37. 37.290² =
  38. 38.1287² =
  39. 39.2788² =
  40. 40.987² =

Answer key

  1. 127449
  2. 76729
  3. 278784
  4. 1227664
  5. 126025
  6. 98386561
  7. 99700225
  8. 56169
  9. 432964
  10. 582169
  11. 34351321
  12. 11449
  13. 16679056
  14. 14400
  15. 381924
  16. 354025
  17. 183184
  18. 896809
  19. 210681
  20. 8708401
  21. 680625
  22. 619369
  23. 5143824
  24. 53361
  25. 774400
  26. 96471684
  27. 50176
  28. 69169
  29. 62500
  30. 185761
  31. 27384289
  32. 11025
  33. 31329
  34. 75533481
  35. 3767481
  36. 925444
  37. 84100
  38. 1656369
  39. 7772944
  40. 974169

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