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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 140 · 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. 1.2880² =
  2. 2.921² =
  3. 3.507² =
  4. 4.210² =
  5. 5.796² =
  6. 6.9806² =
  7. 7.485² =
  8. 8.917² =
  9. 9.308² =
  10. 10.759² =
  11. 11.361² =
  12. 12.3315² =
  13. 13.8312² =
  14. 14.7060² =
  15. 15.610² =
  16. 16.5143² =
  17. 17.7539² =
  18. 18.1062² =
  19. 19.296² =
  20. 20.486² =
  21. 21.2726² =
  22. 22.997² =
  23. 23.101² =
  24. 24.1449² =
  25. 25.7933² =
  26. 26.5227² =
  27. 27.1662² =
  28. 28.557² =
  29. 29.694² =
  30. 30.546² =
  31. 31.979² =
  32. 32.513² =
  33. 33.465² =
  34. 34.708² =
  35. 35.947² =
  36. 36.510² =
  37. 37.889² =
  38. 38.421² =
  39. 39.238² =
  40. 40.150² =

Answer key

  1. 8294400
  2. 848241
  3. 257049
  4. 44100
  5. 633616
  6. 96157636
  7. 235225
  8. 840889
  9. 94864
  10. 576081
  11. 130321
  12. 10989225
  13. 69089344
  14. 49843600
  15. 372100
  16. 26450449
  17. 56836521
  18. 1127844
  19. 87616
  20. 236196
  21. 7431076
  22. 994009
  23. 10201
  24. 2099601
  25. 62932489
  26. 27321529
  27. 2762244
  28. 310249
  29. 481636
  30. 298116
  31. 958441
  32. 263169
  33. 216225
  34. 501264
  35. 896809
  36. 260100
  37. 790321
  38. 177241
  39. 56644
  40. 22500

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