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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 226 · 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. 1.6426² =
  2. 2.133² =
  3. 3.125² =
  4. 4.3175² =
  5. 5.191² =
  6. 6.247² =
  7. 7.963² =
  8. 8.116² =
  9. 9.848² =
  10. 10.398² =
  11. 11.104² =
  12. 12.774² =
  13. 13.110² =
  14. 14.291² =
  15. 15.729² =
  16. 16.748² =
  17. 17.2541² =
  18. 18.209² =
  19. 19.579² =
  20. 20.858² =
  21. 21.264² =
  22. 22.1097² =
  23. 23.531² =
  24. 24.202² =
  25. 25.800² =
  26. 26.984² =
  27. 27.6166² =
  28. 28.141² =
  29. 29.1557² =
  30. 30.613² =
  31. 31.192² =
  32. 32.383² =
  33. 33.310² =
  34. 34.319² =
  35. 35.4530² =
  36. 36.5179² =
  37. 37.261² =
  38. 38.1874² =
  39. 39.212² =
  40. 40.1475² =

Answer key

  1. 41293476
  2. 17689
  3. 15625
  4. 10080625
  5. 36481
  6. 61009
  7. 927369
  8. 13456
  9. 719104
  10. 158404
  11. 10816
  12. 599076
  13. 12100
  14. 84681
  15. 531441
  16. 559504
  17. 6456681
  18. 43681
  19. 335241
  20. 736164
  21. 69696
  22. 1203409
  23. 281961
  24. 40804
  25. 640000
  26. 968256
  27. 38019556
  28. 19881
  29. 2424249
  30. 375769
  31. 36864
  32. 146689
  33. 96100
  34. 101761
  35. 20520900
  36. 26822041
  37. 68121
  38. 3511876
  39. 44944
  40. 2175625

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