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# PSSA Math

### PSSA vocabulary words that may be seen on the test.

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

Circumference | The distance around a circle. |

Composite Number | A whole number having more than two factors. |

Diameter | A line segment that has endpoints on a circle and passes through the center of the circle. |

Expanded Notation | A way to write numbers that shows the value of each digit. (ex: 4372= 4000 + 300 + 70 + 2) |

Greatest Common Factor | The largest factor that 2 or more numbers have in common. |

Histogram | A bar graph in which the labels for the bars are numerical intervals. |

Least Common Multiple | The smallest number,other than zero, that is a common multiple of two or more numbers. |

Line Plot | A graph showing the frequency of data on a number line. |

Nonagon | A polygon with 9 sides. |

Plane | A flat surface that extends infinitely in all directions. |

Prime Number | A whole number that has exactly two factors, 1 and itself. |

Radius | A line segment that has one endpoint on a circle and the other endpoint at the center of the circle. |

Range | The difference between the greatest and least numbers in a set of data. |

Regular Polygon | A polygon that has all sides congruen and all angles congruent. |

Straight Angle | A angle with a measure of 180 degrees. |

Transformation | The moving of a figure by translation (slide), rotation ( turn), or reflection (flip). |

Venn Diagram | A diagram that shows relationships among sets of objects. |

Whole Number | Any of the numbers 0,1,2,3,4,5 (and so on). |

X-Axis | The horizontal number line on a coordinate plane. |

Y-Axis | The vertical number line on a coordinate plane. |

Operation | The four basic operations in math used to solve problems: addition, subtraction, multiplication, and divison. |

Sum | The total or whole amount. The result of adding. |

Product | The result when two numbers are multiplied. |

Difference | The difference between two numbers (subtraction). |

Quotient | The number resulting from dividing one number by another. |

Expression | One or a group of mathematical symbols representing a number or quality. |

Equation | A mathematical statement containing an equals sign to show that two expressions are equal. |