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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 436 · 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. 1.994² =
  2. 2.8766² =
  3. 3.3043² =
  4. 4.182² =
  5. 5.594² =
  6. 6.549² =
  7. 7.429² =
  8. 8.8144² =
  9. 9.2622² =
  10. 10.142² =
  11. 11.890² =
  12. 12.6375² =
  13. 13.257² =
  14. 14.603² =
  15. 15.641² =
  16. 16.908² =
  17. 17.818² =
  18. 18.229² =
  19. 19.5552² =
  20. 20.607² =
  21. 21.823² =
  22. 22.8923² =
  23. 23.252² =
  24. 24.977² =
  25. 25.469² =
  26. 26.865² =
  27. 27.9899² =
  28. 28.4125² =
  29. 29.7088² =
  30. 30.440² =
  31. 31.3566² =
  32. 32.596² =
  33. 33.376² =
  34. 34.944² =
  35. 35.247² =
  36. 36.8775² =
  37. 37.890² =
  38. 38.299² =
  39. 39.592² =
  40. 40.450² =

Answer key

  1. 988036
  2. 76842756
  3. 9259849
  4. 33124
  5. 352836
  6. 301401
  7. 184041
  8. 66324736
  9. 6874884
  10. 20164
  11. 792100
  12. 40640625
  13. 66049
  14. 363609
  15. 410881
  16. 824464
  17. 669124
  18. 52441
  19. 30824704
  20. 368449
  21. 677329
  22. 79619929
  23. 63504
  24. 954529
  25. 219961
  26. 748225
  27. 97990201
  28. 17015625
  29. 50239744
  30. 193600
  31. 12716356
  32. 355216
  33. 141376
  34. 891136
  35. 61009
  36. 77000625
  37. 792100
  38. 89401
  39. 350464
  40. 202500

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