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# semester 1 vocab

### chapters 1-4 math vocab

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

absolute value | the distance the number is from zero on a number line. |

additive inverse | two integers that are opposites. the sum of an integer and its additive inverse is zero |

integer | any number from the set (....-4,-3,-2,-1,1,2,3,4...) where...means continues without end. |

opposites | 2 integers are opposites if they are represented on the number line by points that are the same distance from zero, but on opposite sides of zero. The sum of 2 opposites is zero. |

zero pair | the result when one positive counter is paired with one negative counter. the value of a zero pair is zero. |

bar notation | in repeating decimals, the line or bar placed over the digits that repeat. |

rational numbers | the set of numbers that can be written in the form A/B, where A and B are integers and B does not equal zero. |

repeating decimal | the decimal form of a rational number |

terminating decimal | a repeating decimal which has a repeating digit of zero. |

Additive identity Property | the sum of any number and zero is the number. |

algebra | a branch of mathematics that involves expressions with variables. |

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

Associative property | the way in which numbers are grouped does not change their sum or product. |

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

Commutative Property | the order in which two numbers are added or multiplied does not change their sum or product. |

constant | a term that does not contain a variable. |

factor | to write a number as a product of its factor. |

like terms | terms that contain the same variables raised to the same power. Example- 5x and 6x are like terms. |

Multiplicative Identity Property | the product of any number and 1 is the number. |

Multiplicative Property of Zero | the product of any number and zero is zero. |

term | a number a variable or a product or quotient of numbers and variables. |

variable | a symbol usually a letter used to represent a number in mathematical expressions or sentences. |

equation | a mathematical sentence that conations an equal sign stating that two quantities are equal. |

solution | a replacement value for the variable in an open sentence. A value for the variable that makes an equation true. |

Distributive Property | to multiply a sum by a number, multiply each addend of the sum by the number outside the parentheses. For any numbers a, b, and c, a(b+c)= ab + ac and a(b - c) = ab - ac. |

Created by:
collinb