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# Math Chapter1 Vocab

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

1. Variable | A letter that stands for a number |

2. Order of operations | A set of rules we use in math to determine which operations are performed in which order PEMDAS Parenthesis Exponent Multiply/Divide Add/Subtract |

3. Equation | A mathematical sentence that has an equal sign |

4. Estimate | To find a number that is close to an exact answer |

5. Round | To give an approximation of a number to the nearest one, ten, hundred, thousand and so on… |

6. Exponent | The number that tells how many times you multiply a number by itself |

7. Base | The number that is multiplied by itself |

8. Exponential form | A way of writing repeated multiplication |

9. Squared | A number that is multiplied by itself 2 times |

10. Cubed | A number that is multiplied by itself 3 times |

11. Inverse operations | Operations that “undo" each other such as addition and subtraction or multiplication and division |

12. Expanded form | A number written as the sum of the place values |

13. Associative property | A property that states the way a numbers are grouped in addition Hint: (parenthesis) |

14. Commutative property | The property that states that the order of the addends or factors does not matter |

16. Multiplication property of zero | The property that says when you multiply any number by zero, the answer is zero |

17. Property of equality | Doing the same thing to each side of the equation keeps it balanced and equal |

18. Identity property of addition | The sum of any number and zero is that number 2 + 0 = 2 |

19. Identity property of multiplication | The product of any number and one is that number 5 x 1 = 5 |

20. Evaluate | Solve the problem! |

21. Compatible numbers | Numbers that are easy to compute in your head |

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