# Number Properties

Here are some very important rules about numbers.

Rule | Algebraic | English |
---|---|---|

Associative property of addition | (a+b)+c = a+(b+c) | Parentheses don't matter when adding |

Associative property of multiplication | (ab)c = a(bc) | Parentheses don't matter when multiplying |

Commutative property of addition | a+b = b+a | Order doesn't matter when adding |

Commutative property of multiplication | ab = ba | Order doesn't matter when multiplying |

Distributive property | a(b+c) = ab+ac | Multiplying a number times a sum equals the sum of multiplying that number times each of the terms of the sum. |