# Multiplying by itself (squaring)

In mathematics, we call multiplying a number by itself squaring the number.

We call the result of squaring a whole number a square or a perfect square.

You should be able to fire out the answers to all squares up to `12times12`

It’s just got to be inbuilt.

`2times2` |
= |
`4` |

`3times3` |
= |
`9` |

`4times4` |
= |
`16` |

`5times5` |
= |
`25` |

`6times6` |
= |
`36` |

`7times7` |
= |
`49` |

`8times8` |
= |
`64` |

`9times9` |
= |
`81` |

`10times10` |
= |
`100` |

`11times11` |
= |
`121` |

`12times12` |
= |
`144` |

To help you remember these squared numbers try these:

## 4 x 4 = 16

This 4x4 is a big machine I’m going to get one when I’m 16.

## 5 x 5 = 25

Multiply by 10 and half the result.

## 6 x 6 = 36

Chicks, chicks, dirty chicks, six times six is thirty six.

## 7 x 7 = 49

Seven times seven commit a crime when they rob the number forty nine.

## 8 x 8 = 64

I ate (8) and I ate (8) until I was sick (6) on the floor (4) equals sixty four.

## 9 x 9 = 81

He stood in line (`9xx9`) and ate one ton (81).

## 10 x 10 = 100

Just put a zero on the end.

## 11 x 11 = 121

The 11 players of the soccer team were told to mark the opposing 11 players one to one (121).

## 12 x 12 = 144

12 times 12 is 144,

There is no more!