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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 4 · 40 sums
TalentJR

The trick (Anurupyena): Top row: a³, a²b, ab², b³ (each term is the one before × b ÷ a). Under the two middle terms write double of them, and add: a³ | 3a²b | 3ab² | b³. Combine from the right with carries.

NameDateTime takenScore ___ / 40
  1. 1.61³ =
  2. 2.86³ =
  3. 3.29³ =
  4. 4.87³ =
  5. 5.92³ =
  6. 6.61³ =
  7. 7.42³ =
  8. 8.68³ =
  9. 9.51³ =
  10. 10.32³ =
  11. 11.74³ =
  12. 12.89³ =
  13. 13.13³ =
  14. 14.65³ =
  15. 15.87³ =
  16. 16.16³ =
  17. 17.52³ =
  18. 18.98³ =
  19. 19.11³ =
  20. 20.31³ =
  21. 21.12³ =
  22. 22.22³ =
  23. 23.36³ =
  24. 24.65³ =
  25. 25.69³ =
  26. 26.69³ =
  27. 27.15³ =
  28. 28.16³ =
  29. 29.95³ =
  30. 30.12³ =
  31. 31.51³ =
  32. 32.61³ =
  33. 33.11³ =
  34. 34.65³ =
  35. 35.21³ =
  36. 36.38³ =
  37. 37.75³ =
  38. 38.25³ =
  39. 39.48³ =
  40. 40.24³ =

Answer key

  1. 226981
  2. 636056
  3. 24389
  4. 658503
  5. 778688
  6. 226981
  7. 74088
  8. 314432
  9. 132651
  10. 32768
  11. 405224
  12. 704969
  13. 2197
  14. 274625
  15. 658503
  16. 4096
  17. 140608
  18. 941192
  19. 1331
  20. 29791
  21. 1728
  22. 10648
  23. 46656
  24. 274625
  25. 328509
  26. 328509
  27. 3375
  28. 4096
  29. 857375
  30. 1728
  31. 132651
  32. 226981
  33. 1331
  34. 274625
  35. 9261
  36. 54872
  37. 421875
  38. 15625
  39. 110592
  40. 13824

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