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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 143 · 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. 1.550² =
  2. 2.3682² =
  3. 3.169² =
  4. 4.3214² =
  5. 5.9376² =
  6. 6.608² =
  7. 7.228² =
  8. 8.741² =
  9. 9.498² =
  10. 10.9540² =
  11. 11.116² =
  12. 12.134² =
  13. 13.107² =
  14. 14.1469² =
  15. 15.572² =
  16. 16.910² =
  17. 17.963² =
  18. 18.358² =
  19. 19.458² =
  20. 20.493² =
  21. 21.698² =
  22. 22.672² =
  23. 23.387² =
  24. 24.139² =
  25. 25.832² =
  26. 26.301² =
  27. 27.471² =
  28. 28.8793² =
  29. 29.3389² =
  30. 30.248² =
  31. 31.4131² =
  32. 32.3177² =
  33. 33.8424² =
  34. 34.7038² =
  35. 35.523² =
  36. 36.487² =
  37. 37.9319² =
  38. 38.347² =
  39. 39.117² =
  40. 40.6584² =

Answer key

  1. 302500
  2. 13557124
  3. 28561
  4. 10329796
  5. 87909376
  6. 369664
  7. 51984
  8. 549081
  9. 248004
  10. 91011600
  11. 13456
  12. 17956
  13. 11449
  14. 2157961
  15. 327184
  16. 828100
  17. 927369
  18. 128164
  19. 209764
  20. 243049
  21. 487204
  22. 451584
  23. 149769
  24. 19321
  25. 692224
  26. 90601
  27. 221841
  28. 77316849
  29. 11485321
  30. 61504
  31. 17065161
  32. 10093329
  33. 70963776
  34. 49533444
  35. 273529
  36. 237169
  37. 86843761
  38. 120409
  39. 13689
  40. 43349056

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