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# Carnegie Chapter 7

### math

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

conventions | In mathematics, rules to clarify the order of how to solve problems. |

numerical expression | Is a mathematical phrase containing numbers. |

evaluate | Means to calculate an expression to get a single value. |

operations | Addition, subtraction, multiplication, and division. |

parentheses | Symbols used to group numbers and operations, and are used to change the normal order in which you perform operations. |

order of operations | A set of rules that ensures the same result every time an expression is evaluated. |

square of a number | A number multiplied by itself 2 times. |

perfect squares | The 1, 4, and 9 are examples because each is the square of a whole number. |

square root | A square root is one of two equal factors of a given number. Every number has a positive and a negative one. |

radical | The symbol, √ is used to indicate square roots. |

radicand | The quantity under a radical sign. |

perfect cube | The cube of a whole number. |

cube of a number | To calculate this you multiply the number by itself 3 times. |

cube root | One of 3 equal factors of a number. |

index | The number placed above and to the left of the radical to indicate what root is being calculated. |

variable | The use of letters or symbols in a mathematical sentence that are called... |

algebraic expression | A mathematical phrase involving at least one variable, and sometimes numbers and operation symbols. |

equation | A mathematical sentence that contains an equal sign. It can contain numbers, variables, or both in the same mathematical sentence. |

numerical coefficient | A number, or quantity, that is multiplied by a variable in an algebraic expression. |

constant | A number, or quantity, that does not change its value. |

evaluate an algebraic expression | To determine the value of the expression. |

multiple representations | This problem situation was represented in several ways: ● a diagram of figures ● a table of values ● a verbal description ● an algebraic expression ● a graph. |

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molnarmath