Elementary Academic Words

Words for students from kindergarten to grade 8, each grade has 4 lists: art, math, science, and social. They are essential vocabulary for elementary academic classes.

Grade 5: Word List - Math
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algebraic expression  Read Word
an expression built up from constants, variables, and a finite number of algebraic operations
angle  Read Word
the space between two lines or planes that intersect; the inclination of one line to another; measured in degrees or radians
array  Read Word
an orderly arrangement; an impressive display; an arrangement of aerials spaced to give desired directional characteristics
axis  Read Word
the center around which something rotates; pivot
central tendency  Read Word
a central value or a typical value for a probability distribution
composite  Read Word
made up of distinct parts or elements; compounded
congruence  Read Word
the quality of agreeing; being suitable and appropriate
customary system  Read Word
the system of weights and measures based on the foot and pound and second and pint that dates back to colonial America but differs in some respects from the British Imperial System
customary unit  Read Word
a set of units which can be used to specify anything which can be measured and were historically important, regulated and defined because of trade and internal commerce
decompose  Read Word
lose a stored charge, magnetic flux, or current; break down
diagonal  Read Word
straight line connecting any two vertices of a polygon that are not adjacent
equation  Read Word
making equal; equal division; equality; equilibrium
exponent  Read Word
one that expounds or interprets; one that speaks for, represents, or advocates
frequency  Read Word
the number of occurrences within a given time period
greatest common factor  Read Word
the largest integer that divides without remainder into a set of integers
integer  Read Word
any of the natural numbers (positive or negative) or zero
intercept  Read Word
the point at which a line intersects a coordinate axis; cause to stop on the passage
interior angle  Read Word
the angle inside two adjacent sides of a polygon
intersecting  Read Word
meet at a point
inverse  Read Word
opposite; reversed in order, nature, or effect; turned upside down
least common multiple  Read Word
the smallest multiple that is exactly divisible by every member of a set of numbers
line of symmetry  Read Word
symmetry with respect to reflection
metric system  Read Word
a decimal system of weights and measures based on the meter and the kilogram and the second
metric unit  Read Word
a decimal unit of measurement of the metric system (based on meters and kilograms and seconds)
ordered pair  Read Word
two numbers written in a certain order, usually written in parentheses like this: (4,5)
polygon  Read Word
a closed plane figure bounded by straight sides
prime  Read Word
first in excellence, quality, or value; at the best stage; peak; first in degree or rank; chief
protractor  Read Word
drafting instrument used to draw or measure angles
quadrilateral  Read Word
four-sided polygon; having four sides
rate  Read Word
a quantity or amount or measure considered as a proportion of another quantity or amount or measure
rotational symmetry  Read Word
an object that looks the same after a certain amount of rotation
square root  Read Word
a number that when multiplied by itself equals a given number
standard form  Read Word
scientific notation, where a number is written in two parts: 1)digits with the decimal point placed after the first digit, 2) X10 to a power
stem-and leaf plot  Read Word
a device for presenting quantitative data in a graphical format, similar to a histogram, to assist in visualizing the shape of a distribution
symmetry  Read Word
arrangement of parts so that balance is obtained; congruity
variables  Read Word
symbol representing such a quantity