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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 814 · 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. 1.819² =
  2. 2.551² =
  3. 3.1810² =
  4. 4.130² =
  5. 5.8254² =
  6. 6.216² =
  7. 7.2755² =
  8. 8.668² =
  9. 9.913² =
  10. 10.830² =
  11. 11.239² =
  12. 12.896² =
  13. 13.7535² =
  14. 14.9817² =
  15. 15.4684² =
  16. 16.856² =
  17. 17.6413² =
  18. 18.332² =
  19. 19.228² =
  20. 20.4336² =
  21. 21.493² =
  22. 22.291² =
  23. 23.3212² =
  24. 24.1006² =
  25. 25.614² =
  26. 26.819² =
  27. 27.1300² =
  28. 28.337² =
  29. 29.918² =
  30. 30.899² =
  31. 31.8089² =
  32. 32.655² =
  33. 33.8009² =
  34. 34.372² =
  35. 35.661² =
  36. 36.138² =
  37. 37.178² =
  38. 38.141² =
  39. 39.840² =
  40. 40.270² =

Answer key

  1. 670761
  2. 303601
  3. 3276100
  4. 16900
  5. 68128516
  6. 46656
  7. 7590025
  8. 446224
  9. 833569
  10. 688900
  11. 57121
  12. 802816
  13. 56776225
  14. 96373489
  15. 21939856
  16. 732736
  17. 41126569
  18. 110224
  19. 51984
  20. 18800896
  21. 243049
  22. 84681
  23. 10316944
  24. 1012036
  25. 376996
  26. 670761
  27. 1690000
  28. 113569
  29. 842724
  30. 808201
  31. 65431921
  32. 429025
  33. 64144081
  34. 138384
  35. 436921
  36. 19044
  37. 31684
  38. 19881
  39. 705600
  40. 72900

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