## The Number Rule

Numbers between one and nine should be spelled out. Number 10 or above should be written in Arabic numerals.

Study the following examples.

Wrong |
Correct |

I have 3 cats. |
I have three cats. |

There are twenty-five students in my class. |
There are 25 students in my class. |

My cousin is 5 years old. |
My cousin is five years old. |

The gunman killed ten people. |
The gunman killed 10 people. |

I ate 2 pieces of cake. |
I ate two pieces of cake. |