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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 632 · 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. 1.390² =
  2. 2.9280² =
  3. 3.506² =
  4. 4.993² =
  5. 5.920² =
  6. 6.501² =
  7. 7.4504² =
  8. 8.362² =
  9. 9.5031² =
  10. 10.4084² =
  11. 11.672² =
  12. 12.578² =
  13. 13.9366² =
  14. 14.914² =
  15. 15.348² =
  16. 16.835² =
  17. 17.5451² =
  18. 18.780² =
  19. 19.4570² =
  20. 20.684² =
  21. 21.206² =
  22. 22.797² =
  23. 23.7337² =
  24. 24.505² =
  25. 25.708² =
  26. 26.950² =
  27. 27.524² =
  28. 28.6728² =
  29. 29.924² =
  30. 30.305² =
  31. 31.512² =
  32. 32.902² =
  33. 33.269² =
  34. 34.939² =
  35. 35.198² =
  36. 36.722² =
  37. 37.233² =
  38. 38.945² =
  39. 39.333² =
  40. 40.663² =

Answer key

  1. 152100
  2. 86118400
  3. 256036
  4. 986049
  5. 846400
  6. 251001
  7. 20286016
  8. 131044
  9. 25310961
  10. 16679056
  11. 451584
  12. 334084
  13. 87721956
  14. 835396
  15. 121104
  16. 697225
  17. 29713401
  18. 608400
  19. 20884900
  20. 467856
  21. 42436
  22. 635209
  23. 53831569
  24. 255025
  25. 501264
  26. 902500
  27. 274576
  28. 45265984
  29. 853776
  30. 93025
  31. 262144
  32. 813604
  33. 72361
  34. 881721
  35. 39204
  36. 521284
  37. 54289
  38. 893025
  39. 110889
  40. 439569

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