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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 299 · 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. 1.850² =
  2. 2.365² =
  3. 3.4580² =
  4. 4.704² =
  5. 5.957² =
  6. 6.325² =
  7. 7.6684² =
  8. 8.953² =
  9. 9.4799² =
  10. 10.3031² =
  11. 11.499² =
  12. 12.285² =
  13. 13.3703² =
  14. 14.6602² =
  15. 15.1241² =
  16. 16.794² =
  17. 17.113² =
  18. 18.8406² =
  19. 19.1100² =
  20. 20.595² =
  21. 21.654² =
  22. 22.165² =
  23. 23.759² =
  24. 24.624² =
  25. 25.265² =
  26. 26.487² =
  27. 27.7553² =
  28. 28.4641² =
  29. 29.781² =
  30. 30.840² =
  31. 31.751² =
  32. 32.388² =
  33. 33.9583² =
  34. 34.443² =
  35. 35.260² =
  36. 36.681² =
  37. 37.1542² =
  38. 38.921² =
  39. 39.750² =
  40. 40.9671² =

Answer key

  1. 722500
  2. 133225
  3. 20976400
  4. 495616
  5. 915849
  6. 105625
  7. 44675856
  8. 908209
  9. 23030401
  10. 9186961
  11. 249001
  12. 81225
  13. 13712209
  14. 43586404
  15. 1540081
  16. 630436
  17. 12769
  18. 70660836
  19. 1210000
  20. 354025
  21. 427716
  22. 27225
  23. 576081
  24. 389376
  25. 70225
  26. 237169
  27. 57047809
  28. 21538881
  29. 609961
  30. 705600
  31. 564001
  32. 150544
  33. 91833889
  34. 196249
  35. 67600
  36. 463761
  37. 2377764
  38. 848241
  39. 562500
  40. 93528241

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