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# Unit 4

### Proportional Reasoning with Percents

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

numerator | The part of the fraction that is placed on top of the fraction bar and tells us how many of the parts of the whole are being dealt with. |

denominator | The part of the fraction that is placed below the fraction bar that tells us how many equal parts the whole is divided into. |

decimal number | A number that uses a decimal point followed by digits to the right. |

fraction | rational number expressed as a/b where b does not equal zero |

percent | A ratio comparing a number to 100. |

estimate | A close guess of the actual value, usually with some thought or calculation involved. |

determine | To figure out or settle a question. |

solution | The act of solving a problem or question. |

percent change | The amount stated as a percent in which a quantity increases or decreases. |

percent decrease | A percent change describing a decrease in a quantity. |

percent increase | A percent change describing an increase in a quantity. |

markup | The amount added to the cost price of goods to cover overhead and profit. |

retail price | The total amount charged for a product sold to a customer, which includes the manufacturer's cost plus seller markup. |

commission | A fee paid to a person for making a sale. |

commission rate | The fee paid to a person who makes a sale expressed as a percent of the selling price. |

sales tax | A rate in which a government entity require on the monetary exchange of goods or services. |

revenue | The total amount of money brought in, income. |

profit | The difference between the income and the amount spent in buying, operating, or producing something. |

interest | The amount of money charged for borrowing or using money. |

simple interest | One type of fee paid for the use of money in which there is a fixed percent of the principal and is found using the formula I=prt. |

principal | The initial amount of money borrowed or saved. |

rate of interest | The percent charged or earned on an amount of money. |

Created by:
Mrs Ott