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Grades 5& 6

PSSA Math Vocabulary Practice (Grades 5& 6)

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
Greatest common factor (GCF) 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 the side opposite the right angle)
Least common denominator (LCD) The least common multiple of the denominators in two or more fractions
Least common multiple (LCM) The smallest number, other than zero, that is a common multiple of two or more numbers
Leg (of a right triangle) Either of the two sides that form the 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,corresponding sides of similar polygons are proportional
Straight angle An angle with a measure of 180º
Terminating decimal A decimal that contains a finite number of digits
Transformation The moving of a figure by a translation (slide), rotation (turn) or reflection (flip)
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, (and so on)
X-axis The horizontal number line on a coordinate plane
Y-axis The vertical number line on a coordinate plane
Created by: pstoughton