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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 716 · 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. 1.8180² =
  2. 2.966² =
  3. 3.643² =
  4. 4.9335² =
  5. 5.255² =
  6. 6.2961² =
  7. 7.7727² =
  8. 8.505² =
  9. 9.335² =
  10. 10.125² =
  11. 11.562² =
  12. 12.197² =
  13. 13.328² =
  14. 14.458² =
  15. 15.474² =
  16. 16.196² =
  17. 17.200² =
  18. 18.283² =
  19. 19.259² =
  20. 20.879² =
  21. 21.7035² =
  22. 22.392² =
  23. 23.957² =
  24. 24.297² =
  25. 25.208² =
  26. 26.457² =
  27. 27.4981² =
  28. 28.2114² =
  29. 29.4852² =
  30. 30.218² =
  31. 31.138² =
  32. 32.3778² =
  33. 33.460² =
  34. 34.362² =
  35. 35.449² =
  36. 36.212² =
  37. 37.372² =
  38. 38.825² =
  39. 39.1972² =
  40. 40.587² =

Answer key

  1. 66912400
  2. 933156
  3. 413449
  4. 87142225
  5. 65025
  6. 8767521
  7. 59706529
  8. 255025
  9. 112225
  10. 15625
  11. 315844
  12. 38809
  13. 107584
  14. 209764
  15. 224676
  16. 38416
  17. 40000
  18. 80089
  19. 67081
  20. 772641
  21. 49491225
  22. 153664
  23. 915849
  24. 88209
  25. 43264
  26. 208849
  27. 24810361
  28. 4468996
  29. 23541904
  30. 47524
  31. 19044
  32. 14273284
  33. 211600
  34. 131044
  35. 201601
  36. 44944
  37. 138384
  38. 680625
  39. 3888784
  40. 344569

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