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This table shows the first few whole numbers and their squares.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 1 | 4 | 9 | 16 | 25 | 36 | 49 | 64 | 81 | 100 |
This means that the √81 = 9 and √100 = 10.
It also means that the square root of any number between 81 and 100 lies between 9 and 10.
This table shows the first few whole numbers and their cubes.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 1 | 8 | 27 | 64 | 125 | 216 | 343 | 512 | 729 | 1000 |
This means that the 3√729 = 9 and 3√1000 = 10.
It also means that the cube root of any number between 729 and 1000 lies between 9 and 10.
Let's have a go at some questions.
