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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 603 · 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. 1.75³ =
  2. 2.81³ =
  3. 3.69³ =
  4. 4.42³ =
  5. 5.14³ =
  6. 6.35³ =
  7. 7.43³ =
  8. 8.33³ =
  9. 9.62³ =
  10. 10.81³ =
  11. 11.25³ =
  12. 12.11³ =
  13. 13.53³ =
  14. 14.66³ =
  15. 15.31³ =
  16. 16.15³ =
  17. 17.91³ =
  18. 18.56³ =
  19. 19.43³ =
  20. 20.65³ =
  21. 21.67³ =
  22. 22.33³ =
  23. 23.14³ =
  24. 24.42³ =
  25. 25.32³ =
  26. 26.21³ =
  27. 27.91³ =
  28. 28.19³ =
  29. 29.41³ =
  30. 30.88³ =
  31. 31.68³ =
  32. 32.68³ =
  33. 33.28³ =
  34. 34.87³ =
  35. 35.24³ =
  36. 36.62³ =
  37. 37.49³ =
  38. 38.97³ =
  39. 39.94³ =
  40. 40.91³ =

Answer key

  1. 421875
  2. 531441
  3. 328509
  4. 74088
  5. 2744
  6. 42875
  7. 79507
  8. 35937
  9. 238328
  10. 531441
  11. 15625
  12. 1331
  13. 148877
  14. 287496
  15. 29791
  16. 3375
  17. 753571
  18. 175616
  19. 79507
  20. 274625
  21. 300763
  22. 35937
  23. 2744
  24. 74088
  25. 32768
  26. 9261
  27. 753571
  28. 6859
  29. 68921
  30. 681472
  31. 314432
  32. 314432
  33. 21952
  34. 658503
  35. 13824
  36. 238328
  37. 117649
  38. 912673
  39. 830584
  40. 753571

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