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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 100 · 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. 1.480² =
  2. 2.8664² =
  3. 3.208² =
  4. 4.724² =
  5. 5.999² =
  6. 6.8500² =
  7. 7.862² =
  8. 8.858² =
  9. 9.759² =
  10. 10.621² =
  11. 11.706² =
  12. 12.650² =
  13. 13.971² =
  14. 14.228² =
  15. 15.129² =
  16. 16.578² =
  17. 17.162² =
  18. 18.555² =
  19. 19.230² =
  20. 20.946² =
  21. 21.294² =
  22. 22.9227² =
  23. 23.5058² =
  24. 24.927² =
  25. 25.359² =
  26. 26.691² =
  27. 27.466² =
  28. 28.4666² =
  29. 29.803² =
  30. 30.734² =
  31. 31.747² =
  32. 32.919² =
  33. 33.333² =
  34. 34.271² =
  35. 35.131² =
  36. 36.4025² =
  37. 37.8187² =
  38. 38.5269² =
  39. 39.335² =
  40. 40.709² =

Answer key

  1. 230400
  2. 75064896
  3. 43264
  4. 524176
  5. 998001
  6. 72250000
  7. 743044
  8. 736164
  9. 576081
  10. 385641
  11. 498436
  12. 422500
  13. 942841
  14. 51984
  15. 16641
  16. 334084
  17. 26244
  18. 308025
  19. 52900
  20. 894916
  21. 86436
  22. 85137529
  23. 25583364
  24. 859329
  25. 128881
  26. 477481
  27. 217156
  28. 21771556
  29. 644809
  30. 538756
  31. 558009
  32. 844561
  33. 110889
  34. 73441
  35. 17161
  36. 16200625
  37. 67026969
  38. 27762361
  39. 112225
  40. 502681

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