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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 991 · 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. 1.46³ =
  2. 2.72³ =
  3. 3.96³ =
  4. 4.21³ =
  5. 5.45³ =
  6. 6.49³ =
  7. 7.55³ =
  8. 8.21³ =
  9. 9.28³ =
  10. 10.69³ =
  11. 11.79³ =
  12. 12.26³ =
  13. 13.91³ =
  14. 14.35³ =
  15. 15.96³ =
  16. 16.97³ =
  17. 17.96³ =
  18. 18.81³ =
  19. 19.62³ =
  20. 20.31³ =
  21. 21.21³ =
  22. 22.33³ =
  23. 23.66³ =
  24. 24.52³ =
  25. 25.91³ =
  26. 26.19³ =
  27. 27.85³ =
  28. 28.31³ =
  29. 29.24³ =
  30. 30.81³ =
  31. 31.35³ =
  32. 32.88³ =
  33. 33.76³ =
  34. 34.96³ =
  35. 35.32³ =
  36. 36.54³ =
  37. 37.95³ =
  38. 38.67³ =
  39. 39.61³ =
  40. 40.19³ =

Answer key

  1. 97336
  2. 373248
  3. 884736
  4. 9261
  5. 91125
  6. 117649
  7. 166375
  8. 9261
  9. 21952
  10. 328509
  11. 493039
  12. 17576
  13. 753571
  14. 42875
  15. 884736
  16. 912673
  17. 884736
  18. 531441
  19. 238328
  20. 29791
  21. 9261
  22. 35937
  23. 287496
  24. 140608
  25. 753571
  26. 6859
  27. 614125
  28. 29791
  29. 13824
  30. 531441
  31. 42875
  32. 681472
  33. 438976
  34. 884736
  35. 32768
  36. 157464
  37. 857375
  38. 300763
  39. 226981
  40. 6859

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