# Mathematical Symbols

Symbols save time and space when writing. Here are the **most common** mathematical symbols:

Symbol | Meaning | Example |
---|---|---|

+ | add | 3+7 = 10 |

- | subtract | 5-2 = 3 |

× | multiply | 4×3 = 12 |

/ | divide | 20/5 = 4 |

( ) | grouping symbols | 2(a-3) |

[ ] | grouping symbols | 2[ a-3(b+c) ] |

{ } | set symbols | {1,2,3} |

π | pi | A = πr^{2} |

∞ | infinity | ∞ is endless |

= | equals | 1+1 = 2 |

approximately equal to | π 3.14 | |

≠ | not equal to | π ≠ 2 |

< ≤ | less than, less than or equal to | 2 < 3 |

> ≥ | greater than, greater than or equal to | 5 > 1 |

square root ("radical") | √4 = 2 | |

° | Degrees | 20° |

Therefore | a=b b=a |