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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 924 · 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. 1.217² =
  2. 2.226² =
  3. 3.447² =
  4. 4.705² =
  5. 5.435² =
  6. 6.492² =
  7. 7.341² =
  8. 8.857² =
  9. 9.389² =
  10. 10.1001² =
  11. 11.3439² =
  12. 12.3324² =
  13. 13.345² =
  14. 14.658² =
  15. 15.914² =
  16. 16.2008² =
  17. 17.637² =
  18. 18.2790² =
  19. 19.796² =
  20. 20.743² =
  21. 21.886² =
  22. 22.3485² =
  23. 23.861² =
  24. 24.705² =
  25. 25.8112² =
  26. 26.108² =
  27. 27.765² =
  28. 28.106² =
  29. 29.1598² =
  30. 30.3853² =
  31. 31.853² =
  32. 32.373² =
  33. 33.932² =
  34. 34.463² =
  35. 35.2424² =
  36. 36.325² =
  37. 37.946² =
  38. 38.757² =
  39. 39.114² =
  40. 40.346² =

Answer key

  1. 47089
  2. 51076
  3. 199809
  4. 497025
  5. 189225
  6. 242064
  7. 116281
  8. 734449
  9. 151321
  10. 1002001
  11. 11826721
  12. 11048976
  13. 119025
  14. 432964
  15. 835396
  16. 4032064
  17. 405769
  18. 7784100
  19. 633616
  20. 552049
  21. 784996
  22. 12145225
  23. 741321
  24. 497025
  25. 65804544
  26. 11664
  27. 585225
  28. 11236
  29. 2553604
  30. 14845609
  31. 727609
  32. 139129
  33. 868624
  34. 214369
  35. 5875776
  36. 105625
  37. 894916
  38. 573049
  39. 12996
  40. 119716

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