**What is a cubed number?**

When you multiply a whole number (not a fraction) through itself, and then by chin again the an outcome is a **cube number**. For instance 3 x 3 x 3 = 27.

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An easy way to write 3 cubed is 33. This way three multiplied by itself 3 times.

The easiest method to execute this calculation is to execute the very first multiplication (3x3) and then to multiply your answer by the very same number you began with; 3 x 3 x 3 = 9 x 3 = 27.

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**Learning Cube Numbers**

Cube numbers deserve to be a small bit more confusing than squared numbers, simply since of the extra multiplication. Essentially, you room calculating a 3D shape instead of a flat one.

Here is a level (or 2D) 4 x 4 square:

To calculation the variety of blocks (the squared number) us would merely multiply 4x 4 or 42,equalling 16.

Here is a 3D 4 x 4 cube:

To calculation the variety of blocks (the cubed number) this time we would certainly multiply 4 x 4 x 4 or 43 equalling 64.

In KS2, friend won’t require to discover cube numbers off by heart, yet you will have to have a basic understanding of what they are, and how to calculation them. Often youngsters will be offered a sample of numbers, such together lower end cube numbers and may be asked to try to work out the pattern.

Here is a perform of cubed numbers as much as 12x12:

0 Cubed | = | 03 | = | 0 × 0 x 0 | = | 0 |

1 Cubed | = | 13 | = | 1 × 1 x 1 | = | 1 |

2 Cubed | = | 23 | = | 2 × 2 x 2 | = | 8 |

3 Cubed | = | 33 | = | 3 × 3 x 3 | = | 27 |

4 Cubed | = | 43 | = | 4 × 4 x 4 | = | 64 |

5 Cubed | = | 53 | = | 5 × 5 x 5 | = | 125 |

6 Cubed | = | 63 | = | 6 × 6 x 6 | = | 216 |

7 Cubed | = | 73 | = | 7 × 7 x 7 | = | 343 |

8 Cubed | = | 83 | = | 8 × 8 x 8 | = | 512 |

9 Cubed | = | 93 | = | 9 × 9 x 9 | = | 729 |

10 Cubed | = | 103 | = | 10 × 10 x 10 | = | 1,000 |

11 Cubed | = | 113 | = | 11 × 11 x 11 | = | 1,331 |

12 Cubed | = | 123 | = | 12 × 12 x 12 | = | 1,728 |

**Finding the Cube of a negative Number.**

The cube the a negative number will always be negative, as with the cube that a positive number will constantly be positive.

For example; -53 = -5 x -5 x- -5 = (25 x -5) = -125.

**Finding the Cube of a Decimal.**

See more: The Brightest Stars In Aging Globular Clusters Will Be A, Chapter 20 Flashcards

See more: The Brightest Stars In Aging Globular Clusters Will Be A, Chapter 20 Flashcards

Just like entirety numbers (integers), it’s straightforward to cube a decimal number too. Don’t issue though, you won’t have to memorise these in vital stage 2 (or probably also work castle out)!

1.23 Cubed | = | 1.233 | = | 1.23 × 1.23 x 1.23 | = | 1.860867 | |

2.56 Cubed | = | 2.563 | = | 2.56 × 2.56 x 2.56 | = | 16.777216 |

**Worksheets and Practice**

Here room some worksheets aimed specifically at gaining to grips with cube numbers and also practising her skills.

Year 6 – drawing dice dots on net cubes

Year 8 – know your squares and your cubes

Year 8 – Cube numbers and also cube roots

Year 8 – Practise finding cubes and cube roots on a calculator

**Further Learning**

If cube numbers and puzzles are your thing and you really want to offer yourself a challenge, why no look at the BBC Bitesize website or shot some that the puzzles and also problems set by the NRich team at the college of Cambridge?