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# Math Ch. 7

### Expressions and Patterns

Term | Definition |
---|---|

numerical expression | a combination of numbers and at least one operation (Ex: 4 x 7) |

evaluate | to find the value of a numerical expression |

order of operations | a set of rules to follow when more than one operation is used in a numerical expression |

Step 1 in Order of Operations | Perform operations in parentheses. |

Step 2 in Order of Operations | Find the value of exponents. |

Step 3 in Order of Operations | Multiply and Divide in order from left to right. |

Step 4 in Order of Operations | Add and subtract in order from left to right. |

sequence | a list of numbers that follow a specific pattern |

term | each number in a sequence is called a _______ |

coordinate plane | formed when two perpendicular number lines intersect, one number line has numbers on the x-axis and the other has numbers on the y-axis |

origin | the point where the two axes intersect on a coordinate plane (0,0) |

ordered pair | a pair of numbers that is used to name a point |

x-coordinate | the first number in an ordered pair, goes on the x-axis |

y-coordinate | the second number in an ordered pair, goes on the y-axis |

Created by:
Mrs.Cabell