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# 3rd grade Math

### Unit 1 Vocabulary

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

Number grid | A table with rows and columns that lists numbers in order. A monthly calendar is a number grid. |

Tally charts | A chart that uses marks, called tally marks, to show how many times each value appears in a set of data. |

Line plot | A sketch of data that uses X's, checks, or other marks above a number line to show how many times each value appears in the set of data. |

Bar graph | A graph that uses horizontal or vertical bars to represent data. |

Minimum | The smallest amount. The smallest number in a set of data. |

Maximum | The largest amount. The largest number in a set of data. |

Range | The difference between the largest (maximum) and the smallest (minimum) numbers in a set of data. |

Mode | The number of value that occurs most often in a set of data. |

Median | The middle number in a set of data when the numbers are put in order from smallest to largest, or largest to smallest. The median is also known as the middle number or middle value. |

Equivalent | Different ways to name the same number. |

Decimal | A number such as 23.4, that contains a decimal point. Money amounts such as $6.38 are decimal numbers. The decimal point in money separates the dollars from the cents. |

Decimal point | A dot used to separate the ones place from the tenths place in decimal numbers. |

Estimate | An answer that should be close to an exact answer. To estimate means to give an answer that should be close to an exact answer. |

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pav1nc