PSSA Math Terms Grades 5 & 6
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33 terms
Terms | Definitions |
|---|---|
 chord | a line segment whose endpoints are on a circle |
| 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 |
| heptagon | a polygon with 7 sides |
| histogram | a bar graph in which the labels for the bars are numerical intervals |
| hypotenuse | the longest side of a right triangle (which is also opposite the right angle) |
| least common denominator | the least common multiple of the denominators in two or more fractions |
| least common multiple | the smallest number, other than zero, that is a common multiple of two or more numbers |
| leg | either of the sides that form a right angle in a right triangle |
| 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 |
| quadrants | the four regions of a coordinate plane that are separated by the axes |
| 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 |
| rate | a ratio that compares two quantities having different units |
| ratio | a comparison of two numbers using division |
| regular polygon | a polygon that has all sides congruent and all angles congruent |
| repeating decimal | a decimal that has a repeating sequence of numbers after the decimal point |
| similar polygons | polygons that have the same shape, but not necessarily the same size |
| straight angle | an angle with a measure of 180 degrees |
| terminating decimal | a decimal that contains a finite number of digits |
| transformation | the moving of a figure by translation, rotation, or reflection |
| unit price | the price of a single item or amount |
| unit rate | a rate with the second term being one unit |
| venn diagram | a diagram that shows relationships among sets of objects |
| whole number | any of the numbers 0, 1, 2, 3, 4, 5... |
| x-axis | the horizontal number line on a coordinate plane |
| y-axis | the vertical number line on a coordinate plane |
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