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# Algebra Terms

### Yr 7

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

Sequence | a number pattern. |

Term | Each number in a sequence. |

Rule or Formula | Describes the pattern in a sequence. |

Input | The number you start with. |

Output | The number you finish with or the answer. |

Pronumeral (variable) | Is written in lower case letters. |

Multiplying pronumerals (variables) | You don't write the times sign & the number is written in front of the pronumeral Eg: h = k x 5 is written as h=5k |

Substitution | The pronumerals is replaced by a number. Giving a pronumeral a value. |

Coefficient | The number in front of a pronumeral. |

Expressions | Made up of pronumerals & numbers. Does NOT have an equal sign. |

Equations | Does Have an equal sign. |

Constant | Contains only a number |

Like Terms | Has exactly the same pronumerals. Eg: 10a & 3a or 8egh & ghe Must be raised to the same power. You can only add or subtract like terms |

Unlike Terms | Have different pronumerals Eg: abc & 7bc or 4c & 4k Or raised to a different power |

Distributive Law | Expanding the brackets Each term inside the brackets is multiplied with the term directly outside the bracket |

Evaluate | Substitute a number for each pronumeral in the expression and then work out the value. |