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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 737 · 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. 1.221² =
  2. 2.642² =
  3. 3.932² =
  4. 4.704² =
  5. 5.821² =
  6. 6.951² =
  7. 7.518² =
  8. 8.2582² =
  9. 9.2096² =
  10. 10.433² =
  11. 11.273² =
  12. 12.848² =
  13. 13.3865² =
  14. 14.617² =
  15. 15.891² =
  16. 16.139² =
  17. 17.9487² =
  18. 18.174² =
  19. 19.421² =
  20. 20.1407² =
  21. 21.169² =
  22. 22.1046² =
  23. 23.149² =
  24. 24.962² =
  25. 25.1534² =
  26. 26.8646² =
  27. 27.536² =
  28. 28.186² =
  29. 29.7532² =
  30. 30.599² =
  31. 31.662² =
  32. 32.566² =
  33. 33.125² =
  34. 34.3174² =
  35. 35.112² =
  36. 36.141² =
  37. 37.363² =
  38. 38.736² =
  39. 39.250² =
  40. 40.854² =

Answer key

  1. 48841
  2. 412164
  3. 868624
  4. 495616
  5. 674041
  6. 904401
  7. 268324
  8. 6666724
  9. 4393216
  10. 187489
  11. 74529
  12. 719104
  13. 14938225
  14. 380689
  15. 793881
  16. 19321
  17. 90003169
  18. 30276
  19. 177241
  20. 1979649
  21. 28561
  22. 1094116
  23. 22201
  24. 925444
  25. 2353156
  26. 74753316
  27. 287296
  28. 34596
  29. 56731024
  30. 358801
  31. 438244
  32. 320356
  33. 15625
  34. 10074276
  35. 12544
  36. 19881
  37. 131769
  38. 541696
  39. 62500
  40. 729316

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