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# 6th Chap 2 Vocab

### 6th Grade Chapter 2 Operation Sense Vocabulary

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

numerical expression | mathematical phrase that includes only numbers and operation symbols: 4 + 5 |

variable | letter or symbol that can stand for one or more numbers |

algebraic expression | mathematical phrase that includes a variable 76 – a |

evaluate | find the value or solve |

equation | a statement showing the two quantities are equal: 4 x 4 = 14 + 2 |

solution | a value that, when substituted for the variable, makes an equation true; 76 – a = 45, a = 31 |

Commutative Property | property that states the order of addends or factors does not change the sum or product 34 + 41 = 41 + 34 |

Associative Property | property that states the way addends or factors are grouped does not change the sum or product 15 x (6 x 34) = (15 x 6) x 34 |

Distributive Property | property that states multiplying a sum by a number is the same as multiplying each addend by the number tend then adding the products 14 x (7 + 3) = (14 x 7) + (14 x 3) |

Identity Property of Addition | property that states the sum of zero and any number is that number 58 + 0 = 58 |

Identity Property of Multiplication | property that states the product of 1 and any number is that number 86 x 1 = 86 |

compensation | a mental math strategy in which you change one addend to a multiple of ten and then adjust the other addend to keep the balance |

exponent | a number that tells how many times a base is to be used as a factor |

base | a number used as a repeated factor |

order of operations | rules to follow to evaluate numerical expressions |

Created by:
dselling