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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 672 · 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. 1.779² =
  2. 2.283² =
  3. 3.999² =
  4. 4.914² =
  5. 5.318² =
  6. 6.5727² =
  7. 7.139² =
  8. 8.309² =
  9. 9.733² =
  10. 10.8994² =
  11. 11.3604² =
  12. 12.759² =
  13. 13.9058² =
  14. 14.4316² =
  15. 15.991² =
  16. 16.679² =
  17. 17.323² =
  18. 18.1665² =
  19. 19.3110² =
  20. 20.175² =
  21. 21.434² =
  22. 22.123² =
  23. 23.934² =
  24. 24.6053² =
  25. 25.712² =
  26. 26.7347² =
  27. 27.120² =
  28. 28.120² =
  29. 29.787² =
  30. 30.502² =
  31. 31.860² =
  32. 32.6390² =
  33. 33.388² =
  34. 34.7063² =
  35. 35.4421² =
  36. 36.5919² =
  37. 37.5082² =
  38. 38.911² =
  39. 39.497² =
  40. 40.353² =

Answer key

  1. 606841
  2. 80089
  3. 998001
  4. 835396
  5. 101124
  6. 32798529
  7. 19321
  8. 95481
  9. 537289
  10. 80892036
  11. 12988816
  12. 576081
  13. 82047364
  14. 18627856
  15. 982081
  16. 461041
  17. 104329
  18. 2772225
  19. 9672100
  20. 30625
  21. 188356
  22. 15129
  23. 872356
  24. 36638809
  25. 506944
  26. 53978409
  27. 14400
  28. 14400
  29. 619369
  30. 252004
  31. 739600
  32. 40832100
  33. 150544
  34. 49885969
  35. 19545241
  36. 35034561
  37. 25826724
  38. 829921
  39. 247009
  40. 124609

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