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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 86 · 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. 1.25³ =
  2. 2.31³ =
  3. 3.54³ =
  4. 4.21³ =
  5. 5.82³ =
  6. 6.54³ =
  7. 7.41³ =
  8. 8.59³ =
  9. 9.77³ =
  10. 10.42³ =
  11. 11.98³ =
  12. 12.34³ =
  13. 13.94³ =
  14. 14.31³ =
  15. 15.99³ =
  16. 16.41³ =
  17. 17.94³ =
  18. 18.58³ =
  19. 19.95³ =
  20. 20.67³ =
  21. 21.82³ =
  22. 22.71³ =
  23. 23.99³ =
  24. 24.87³ =
  25. 25.49³ =
  26. 26.15³ =
  27. 27.48³ =
  28. 28.11³ =
  29. 29.52³ =
  30. 30.49³ =
  31. 31.52³ =
  32. 32.65³ =
  33. 33.33³ =
  34. 34.13³ =
  35. 35.91³ =
  36. 36.55³ =
  37. 37.65³ =
  38. 38.16³ =
  39. 39.48³ =
  40. 40.98³ =

Answer key

  1. 15625
  2. 29791
  3. 157464
  4. 9261
  5. 551368
  6. 157464
  7. 68921
  8. 205379
  9. 456533
  10. 74088
  11. 941192
  12. 39304
  13. 830584
  14. 29791
  15. 970299
  16. 68921
  17. 830584
  18. 195112
  19. 857375
  20. 300763
  21. 551368
  22. 357911
  23. 970299
  24. 658503
  25. 117649
  26. 3375
  27. 110592
  28. 1331
  29. 140608
  30. 117649
  31. 140608
  32. 274625
  33. 35937
  34. 2197
  35. 753571
  36. 166375
  37. 274625
  38. 4096
  39. 110592
  40. 941192

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