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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 711 · 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. 1.179² =
  2. 2.957² =
  3. 3.425² =
  4. 4.652² =
  5. 5.953² =
  6. 6.719² =
  7. 7.946² =
  8. 8.393² =
  9. 9.439² =
  10. 10.2865² =
  11. 11.117² =
  12. 12.865² =
  13. 13.110² =
  14. 14.609² =
  15. 15.774² =
  16. 16.249² =
  17. 17.221² =
  18. 18.971² =
  19. 19.321² =
  20. 20.415² =
  21. 21.140² =
  22. 22.910² =
  23. 23.842² =
  24. 24.4230² =
  25. 25.2277² =
  26. 26.595² =
  27. 27.9877² =
  28. 28.711² =
  29. 29.664² =
  30. 30.125² =
  31. 31.286² =
  32. 32.761² =
  33. 33.383² =
  34. 34.320² =
  35. 35.547² =
  36. 36.307² =
  37. 37.289² =
  38. 38.2138² =
  39. 39.689² =
  40. 40.807² =

Answer key

  1. 32041
  2. 915849
  3. 180625
  4. 425104
  5. 908209
  6. 516961
  7. 894916
  8. 154449
  9. 192721
  10. 8208225
  11. 13689
  12. 748225
  13. 12100
  14. 370881
  15. 599076
  16. 62001
  17. 48841
  18. 942841
  19. 103041
  20. 172225
  21. 19600
  22. 828100
  23. 708964
  24. 17892900
  25. 5184729
  26. 354025
  27. 97555129
  28. 505521
  29. 440896
  30. 15625
  31. 81796
  32. 579121
  33. 146689
  34. 102400
  35. 299209
  36. 94249
  37. 83521
  38. 4571044
  39. 474721
  40. 651249

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