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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 402 · 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. 1.243² =
  2. 2.901² =
  3. 3.143² =
  4. 4.891² =
  5. 5.969² =
  6. 6.537² =
  7. 7.777² =
  8. 8.300² =
  9. 9.166² =
  10. 10.8272² =
  11. 11.638² =
  12. 12.122² =
  13. 13.789² =
  14. 14.851² =
  15. 15.235² =
  16. 16.4813² =
  17. 17.460² =
  18. 18.662² =
  19. 19.797² =
  20. 20.124² =
  21. 21.536² =
  22. 22.192² =
  23. 23.463² =
  24. 24.2750² =
  25. 25.1726² =
  26. 26.4106² =
  27. 27.861² =
  28. 28.286² =
  29. 29.985² =
  30. 30.838² =
  31. 31.512² =
  32. 32.3694² =
  33. 33.839² =
  34. 34.8079² =
  35. 35.981² =
  36. 36.459² =
  37. 37.861² =
  38. 38.217² =
  39. 39.335² =
  40. 40.769² =

Answer key

  1. 59049
  2. 811801
  3. 20449
  4. 793881
  5. 938961
  6. 288369
  7. 603729
  8. 90000
  9. 27556
  10. 68425984
  11. 407044
  12. 14884
  13. 622521
  14. 724201
  15. 55225
  16. 23164969
  17. 211600
  18. 438244
  19. 635209
  20. 15376
  21. 287296
  22. 36864
  23. 214369
  24. 7562500
  25. 2979076
  26. 16859236
  27. 741321
  28. 81796
  29. 970225
  30. 702244
  31. 262144
  32. 13645636
  33. 703921
  34. 65270241
  35. 962361
  36. 210681
  37. 741321
  38. 47089
  39. 112225
  40. 591361

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