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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 890 · 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. 1.99³ =
  2. 2.22³ =
  3. 3.37³ =
  4. 4.51³ =
  5. 5.91³ =
  6. 6.57³ =
  7. 7.76³ =
  8. 8.37³ =
  9. 9.12³ =
  10. 10.24³ =
  11. 11.69³ =
  12. 12.73³ =
  13. 13.54³ =
  14. 14.15³ =
  15. 15.56³ =
  16. 16.43³ =
  17. 17.42³ =
  18. 18.56³ =
  19. 19.29³ =
  20. 20.14³ =
  21. 21.15³ =
  22. 22.11³ =
  23. 23.19³ =
  24. 24.25³ =
  25. 25.45³ =
  26. 26.27³ =
  27. 27.65³ =
  28. 28.26³ =
  29. 29.13³ =
  30. 30.71³ =
  31. 31.61³ =
  32. 32.67³ =
  33. 33.42³ =
  34. 34.55³ =
  35. 35.17³ =
  36. 36.35³ =
  37. 37.99³ =
  38. 38.73³ =
  39. 39.61³ =
  40. 40.43³ =

Answer key

  1. 970299
  2. 10648
  3. 50653
  4. 132651
  5. 753571
  6. 185193
  7. 438976
  8. 50653
  9. 1728
  10. 13824
  11. 328509
  12. 389017
  13. 157464
  14. 3375
  15. 175616
  16. 79507
  17. 74088
  18. 175616
  19. 24389
  20. 2744
  21. 3375
  22. 1331
  23. 6859
  24. 15625
  25. 91125
  26. 19683
  27. 274625
  28. 17576
  29. 2197
  30. 357911
  31. 226981
  32. 300763
  33. 74088
  34. 166375
  35. 4913
  36. 42875
  37. 970299
  38. 389017
  39. 226981
  40. 79507

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