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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 38 · 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. 1.703² =
  2. 2.5287² =
  3. 3.716² =
  4. 4.7702² =
  5. 5.313² =
  6. 6.700² =
  7. 7.799² =
  8. 8.370² =
  9. 9.333² =
  10. 10.7615² =
  11. 11.606² =
  12. 12.472² =
  13. 13.5989² =
  14. 14.239² =
  15. 15.979² =
  16. 16.741² =
  17. 17.888² =
  18. 18.336² =
  19. 19.579² =
  20. 20.1958² =
  21. 21.319² =
  22. 22.8004² =
  23. 23.563² =
  24. 24.549² =
  25. 25.368² =
  26. 26.590² =
  27. 27.7778² =
  28. 28.629² =
  29. 29.745² =
  30. 30.454² =
  31. 31.480² =
  32. 32.916² =
  33. 33.1153² =
  34. 34.7820² =
  35. 35.859² =
  36. 36.523² =
  37. 37.2139² =
  38. 38.645² =
  39. 39.950² =
  40. 40.926² =

Answer key

  1. 494209
  2. 27952369
  3. 512656
  4. 59320804
  5. 97969
  6. 490000
  7. 638401
  8. 136900
  9. 110889
  10. 57988225
  11. 367236
  12. 222784
  13. 35868121
  14. 57121
  15. 958441
  16. 549081
  17. 788544
  18. 112896
  19. 335241
  20. 3833764
  21. 101761
  22. 64064016
  23. 316969
  24. 301401
  25. 135424
  26. 348100
  27. 60497284
  28. 395641
  29. 555025
  30. 206116
  31. 230400
  32. 839056
  33. 1329409
  34. 61152400
  35. 737881
  36. 273529
  37. 4575321
  38. 416025
  39. 902500
  40. 857476

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