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# Symbols&Setof#

### Symbols and Sets of Numbers Vocabular: Beg. Alg.

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

What is a set? | Is a collection of Objects |

What are the objects of sets usually called? | Members or Elements |

Collection of objects | Set |

Objects generally in a set | members or elements |

Members or Elements | Objects in a set |

Roster form | Just lists out elements of a set between two set brackets {january,june,july} |

Just lists out of elements of a set between two set brackets | Roster form |

Equal = | To notate that two expressions are equal to each, |

= | Notates two expressions are equal |

A < B | A is less than b |

A is less than b | A <B |

A>B | a is greater than b |

Mathematical statement | uses the equality and inequality symbols shown above. Judged either true or false |

Uses the equality and inequality symbols. | Mathematical statement |

Natural or counting numbers | N= {1,2,3,4,5,6,7...} |

N= {1,2,3,4,5,6,7...} | Natural or counting numbers |

Whole Numbers | {0,1,2,3,4,5,6,7...} |

{0,1,2,3,4,5,6,7...} | Whole numbers |

Integers | Z= {...,-5,-4,-3,-2,-1,0,1,2,3,4,5...} |

Z= {...,-5,-4,-3,-2,-1,0,1,2,3,4,5...} | Integers |

Natural numbers and whole numbers are both subsets of what? | Integers |

Rational Numbers | is a number that can be written as one integer over another |

Is a number that can be written as one integer over another | Rational number |

Natural numbers, whole numbers and integers are all subsets of what. | Rational numbers |

Irrational numbers | Numbers that are not perfect roots, non-terminating, non-repeating decimals like Pi. |

Real Numbers | Any number that belongs to either the rational numbers or irrational numbers would be considered this. Includes natural, whole and integers |

Any number that belongs to either the rational numbers or irrational numbers would be considered this. Includes natural, whole and integers | Real numbers |

Zero on the number line is called what? | Origin |

origin | zero on a number line |

Negative numbers | On the left of 0 |

On the left of 0 | Negative Numbers |

Positive Numbers | Located at the right of 0 |

Located at the right of 0 | Positive number |

0 , zero | Does not belong to either groups. Neither negative or positive |

Absolute value | Measures the distance that x is away from origin (0) |

Measures the distance that x is away from origin (0) | Absolute value |

2.5 ? 1.5 Replace ? with either <,>, or = | 2.5>1.5 |

Created by:
JoriLynn