Important Squares and Cubes to remember (1 to 30)
| Number | Square (n²) | Cube (n³) |
|---|---|---|
| 1 | 1 | 1 |
| 2 | 4 | 8 |
| 3 | 9 | 27 |
| 4 | 16 | 64 |
| 5 | 25 | 125 |
| 6 | 36 | 216 |
| 7 | 49 | 343 |
| 8 | 64 | 512 |
| 9 | 81 | 729 |
| 10 | 100 | 1000 |
| 11 | 121 | 1331 |
| 12 | 144 | 1728 |
| 13 | 169 | 2197 |
| 14 | 196 | 2744 |
| 15 | 225 | 3375 |
| 16 | 256 | 4096 |
| 17 | 289 | 4913 |
| 18 | 324 | 5832 |
| 19 | 361 | 6859 |
| 20 | 400 | 8000 |
| 21 | 441 | 9261 |
| 22 | 484 | 10648 |
| 23 | 529 | 12167 |
| 24 | 576 | 13824 |
| 25 | 625 | 15625 |
| 26 | 676 | 17576 |
| 27 | 729 | 19683 |
| 28 | 784 | 21952 |
| 29 | 841 | 24389 |
| 30 | 900 | 27000 |
✅ Exam Tip:
- You must know squares up to 30 and cubes up to 20 by heart.
- For cubes above 20, quick estimation (e.g., 25³ ≈ 15,000+) is sufficient for most simplification problems.