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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 902 · 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. 1.208² =
  2. 2.308² =
  3. 3.9868² =
  4. 4.223² =
  5. 5.953² =
  6. 6.276² =
  7. 7.157² =
  8. 8.723² =
  9. 9.7905² =
  10. 10.4582² =
  11. 11.810² =
  12. 12.866² =
  13. 13.555² =
  14. 14.4531² =
  15. 15.117² =
  16. 16.8227² =
  17. 17.562² =
  18. 18.536² =
  19. 19.1065² =
  20. 20.150² =
  21. 21.849² =
  22. 22.908² =
  23. 23.8526² =
  24. 24.448² =
  25. 25.915² =
  26. 26.390² =
  27. 27.993² =
  28. 28.634² =
  29. 29.723² =
  30. 30.2860² =
  31. 31.9142² =
  32. 32.2484² =
  33. 33.690² =
  34. 34.781² =
  35. 35.9408² =
  36. 36.6513² =
  37. 37.8304² =
  38. 38.4238² =
  39. 39.857² =
  40. 40.9754² =

Answer key

  1. 43264
  2. 94864
  3. 97377424
  4. 49729
  5. 908209
  6. 76176
  7. 24649
  8. 522729
  9. 62489025
  10. 20994724
  11. 656100
  12. 749956
  13. 308025
  14. 20529961
  15. 13689
  16. 67683529
  17. 315844
  18. 287296
  19. 1134225
  20. 22500
  21. 720801
  22. 824464
  23. 72692676
  24. 200704
  25. 837225
  26. 152100
  27. 986049
  28. 401956
  29. 522729
  30. 8179600
  31. 83576164
  32. 6170256
  33. 476100
  34. 609961
  35. 88510464
  36. 42419169
  37. 68956416
  38. 17960644
  39. 734449
  40. 95140516

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