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# Pre-Algebra midterm

### Chapters 1-4 vocabulary

Question | Answer |
---|---|

a letter that stands for a number | variable |

a mathematical phrase that uses variables, numerals, and operation symbols | variable expression |

an agreed upon process for simplifying an expression | order of operations |

to replace each variable with a number and when used the order of operations to simplify | evaluate |

numbers that are the same distance from zero on a number line | opposites |

whole numbers and their opposites | integers |

a number's distance from zero on the number line | absolute value |

the horizontal number line on a coordinate plane | x-axis |

the vertical number line on a coordinate plane | y-axis |

x- and y- axes divide the coordinate plane into four ________________________ | quadrants |

coordinates and location of a point | ordered pair |

when you add a number and 0, the sum equals the original number | additive identity |

when you multiply a number and 1, the product equals the original number | multiplicative identity |

a number or the product of a number and a variable | term |

a number that does not vary or a term that has no variable | constant |

the number that multiples a variable | coefficient |

5x and 7x are called _________ _________ | like terms |

a mathematical sentence with an equal sign | equation |

an equation with one or more variables | open sentences |

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

a mathematical sentence that contains > or < | inequality |

changing the order of the addends or factors does not change the answer | commutivative properties of + and * |

changing the grouping of the addends or factors does not change the answer | associative properties of + and * |

to multiply a number outside parentheses by each term of a sum or difference inside the parentheses | distributive property |

numbers that are easy to work with mentally | compatible numbers |

mean, median, and mode are called the _____________________________________ of a collection of data | measures of central tendency |

the sum of the data values divided by the sum of the data | mean |

the middle number when data values are arranged in order | median |

the data item that occurs most often | mode |

a data value that is much greater or less than the other data values | outlier |

an equation that shows a relationship between quantities that are represented by variables | formula |

the distance around a figure | perimeter |

when one number divides into another number with no remainder | divisible |

the number used as the factor when writing a power | base |

a number with more than two factors | composite number |

numbers that are multipled together are called ______________________ | factors |

number that tells you how many times to multiply a factor | exponents |

a number with two factors, 1 and itself | prime numbers |

the product of a set of prime numbers | prime factorization |

the largest number that divides into two or more numbers | GCF |

a number written in a/b form | rational number |

Created by:
ahastings