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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 856 · 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. 1.3023² =
  2. 2.122² =
  3. 3.577² =
  4. 4.6944² =
  5. 5.818² =
  6. 6.524² =
  7. 7.5286² =
  8. 8.972² =
  9. 9.3917² =
  10. 10.5849² =
  11. 11.858² =
  12. 12.812² =
  13. 13.485² =
  14. 14.334² =
  15. 15.165² =
  16. 16.101² =
  17. 17.609² =
  18. 18.796² =
  19. 19.347² =
  20. 20.314² =
  21. 21.401² =
  22. 22.3385² =
  23. 23.284² =
  24. 24.387² =
  25. 25.909² =
  26. 26.3051² =
  27. 27.682² =
  28. 28.570² =
  29. 29.363² =
  30. 30.7018² =
  31. 31.951² =
  32. 32.438² =
  33. 33.605² =
  34. 34.3043² =
  35. 35.334² =
  36. 36.255² =
  37. 37.841² =
  38. 38.279² =
  39. 39.279² =
  40. 40.316² =

Answer key

  1. 9138529
  2. 14884
  3. 332929
  4. 48219136
  5. 669124
  6. 274576
  7. 27941796
  8. 944784
  9. 15342889
  10. 34210801
  11. 736164
  12. 659344
  13. 235225
  14. 111556
  15. 27225
  16. 10201
  17. 370881
  18. 633616
  19. 120409
  20. 98596
  21. 160801
  22. 11458225
  23. 80656
  24. 149769
  25. 826281
  26. 9308601
  27. 465124
  28. 324900
  29. 131769
  30. 49252324
  31. 904401
  32. 191844
  33. 366025
  34. 9259849
  35. 111556
  36. 65025
  37. 707281
  38. 77841
  39. 77841
  40. 99856

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