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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 749 · 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. 1.515² =
  2. 2.8526² =
  3. 3.776² =
  4. 4.3169² =
  5. 5.300² =
  6. 6.1399² =
  7. 7.6010² =
  8. 8.1043² =
  9. 9.152² =
  10. 10.2868² =
  11. 11.553² =
  12. 12.5710² =
  13. 13.360² =
  14. 14.321² =
  15. 15.797² =
  16. 16.124² =
  17. 17.6706² =
  18. 18.276² =
  19. 19.2927² =
  20. 20.602² =
  21. 21.6909² =
  22. 22.9670² =
  23. 23.2840² =
  24. 24.430² =
  25. 25.107² =
  26. 26.101² =
  27. 27.390² =
  28. 28.474² =
  29. 29.289² =
  30. 30.548² =
  31. 31.459² =
  32. 32.4660² =
  33. 33.711² =
  34. 34.950² =
  35. 35.2598² =
  36. 36.214² =
  37. 37.6876² =
  38. 38.541² =
  39. 39.287² =
  40. 40.128² =

Answer key

  1. 265225
  2. 72692676
  3. 602176
  4. 10042561
  5. 90000
  6. 1957201
  7. 36120100
  8. 1087849
  9. 23104
  10. 8225424
  11. 305809
  12. 32604100
  13. 129600
  14. 103041
  15. 635209
  16. 15376
  17. 44970436
  18. 76176
  19. 8567329
  20. 362404
  21. 47734281
  22. 93508900
  23. 8065600
  24. 184900
  25. 11449
  26. 10201
  27. 152100
  28. 224676
  29. 83521
  30. 300304
  31. 210681
  32. 21715600
  33. 505521
  34. 902500
  35. 6749604
  36. 45796
  37. 47279376
  38. 292681
  39. 82369
  40. 16384

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