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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 892 · 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. 1.930² =
  2. 2.758² =
  3. 3.3632² =
  4. 4.969² =
  5. 5.2236² =
  6. 6.8062² =
  7. 7.6575² =
  8. 8.542² =
  9. 9.565² =
  10. 10.432² =
  11. 11.102² =
  12. 12.778² =
  13. 13.8214² =
  14. 14.820² =
  15. 15.737² =
  16. 16.533² =
  17. 17.821² =
  18. 18.826² =
  19. 19.1186² =
  20. 20.271² =
  21. 21.8471² =
  22. 22.484² =
  23. 23.904² =
  24. 24.959² =
  25. 25.980² =
  26. 26.651² =
  27. 27.948² =
  28. 28.922² =
  29. 29.185² =
  30. 30.275² =
  31. 31.6542² =
  32. 32.3223² =
  33. 33.302² =
  34. 34.5001² =
  35. 35.594² =
  36. 36.8572² =
  37. 37.2798² =
  38. 38.698² =
  39. 39.637² =
  40. 40.525² =

Answer key

  1. 864900
  2. 574564
  3. 13191424
  4. 938961
  5. 4999696
  6. 64995844
  7. 43230625
  8. 293764
  9. 319225
  10. 186624
  11. 10404
  12. 605284
  13. 67469796
  14. 672400
  15. 543169
  16. 284089
  17. 674041
  18. 682276
  19. 1406596
  20. 73441
  21. 71757841
  22. 234256
  23. 817216
  24. 919681
  25. 960400
  26. 423801
  27. 898704
  28. 850084
  29. 34225
  30. 75625
  31. 42797764
  32. 10387729
  33. 91204
  34. 25010001
  35. 352836
  36. 73479184
  37. 7828804
  38. 487204
  39. 405769
  40. 275625

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