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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 854 · 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. 1.346² =
  2. 2.990² =
  3. 3.802² =
  4. 4.475² =
  5. 5.159² =
  6. 6.835² =
  7. 7.469² =
  8. 8.789² =
  9. 9.865² =
  10. 10.2624² =
  11. 11.1010² =
  12. 12.733² =
  13. 13.976² =
  14. 14.456² =
  15. 15.475² =
  16. 16.113² =
  17. 17.5581² =
  18. 18.553² =
  19. 19.2443² =
  20. 20.342² =
  21. 21.1140² =
  22. 22.970² =
  23. 23.295² =
  24. 24.5824² =
  25. 25.350² =
  26. 26.643² =
  27. 27.182² =
  28. 28.940² =
  29. 29.909² =
  30. 30.3291² =
  31. 31.471² =
  32. 32.122² =
  33. 33.240² =
  34. 34.298² =
  35. 35.337² =
  36. 36.380² =
  37. 37.750² =
  38. 38.446² =
  39. 39.165² =
  40. 40.868² =

Answer key

  1. 119716
  2. 980100
  3. 643204
  4. 225625
  5. 25281
  6. 697225
  7. 219961
  8. 622521
  9. 748225
  10. 6885376
  11. 1020100
  12. 537289
  13. 952576
  14. 207936
  15. 225625
  16. 12769
  17. 31147561
  18. 305809
  19. 5968249
  20. 116964
  21. 1299600
  22. 940900
  23. 87025
  24. 33918976
  25. 122500
  26. 413449
  27. 33124
  28. 883600
  29. 826281
  30. 10830681
  31. 221841
  32. 14884
  33. 57600
  34. 88804
  35. 113569
  36. 144400
  37. 562500
  38. 198916
  39. 27225
  40. 753424

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