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# 7 Math Ch. 1

### Decimal Patterns and Algebra

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

algebra | the branch of mathematics that involves expressions with variables |

algebraic expression | a combination of variables, numbers, and at least one operation |

arithmetic sequence | a sequence in which each term is found by adding the same number |

base | in a power, the number used as a factor |

coefficient | the numerical factor of a term that contains a variable |

constant | a term that does not contain a variable |

cubed | the product in which in a number is a factor three times |

defining the variable | choosing a variable to represent an unknown value in a problem, and using it to write an expression or equation so solve the problem |

equation | a mathematical sentence that contains an equal sign |

equivalent expressions | expressions that have the same value |

evaluate | to find the value of an expression |

exponent | in a power, the number that tells how many times the base is used as a factor |

exponential form | numbers written with exponents |

factors | two or more numbers that are multiplied together to form a product |

geometric sequence | a sequence in which each term can be found by multiplying the previous term by the same number |

gram | a unit of mass in the metric system equivalent to 0.001 kilogram |

kilogram | the base unit of mass in the metric system equivalent to 1,000 grams |

liter | the base unit of capacity in the metric system, a little more than a quart |

meter | the base unit of length in the metric system |

metric system | a base-ten system of measurement using the base units: meter for length, kilogram for mass, and liter for capacity |

numerical expression | a combination of numbers and operations |

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

powers | numbers expressed using exponents |

properties | statements that are true for any number or variable |

scientific notation | a number written as a product of a number that is at least 1 but less than 10, and a power of ten |

sequence | a list of numbers in a certain order |

solution | a value for the variable that makes an equation true |

solving an equation | the process of finding a solution to an equation |

squared | a number multiplied by itself |

standard form | numbers written without exponents |

term | a number, a variable, or a product or quotient of numbers and variables/ each number in a sequence |

variable | a placeholder, usually a letter, used to represent an unspecified value in mathematical expressions or sentences |

Created by:
Miss Brinkoetter