Download to the definitions in Word format

Tennessee Academic Vocabulary – 5th grade
MATH
WORD
Diameter
Distributive
property (numeric)
Edges
Equation
(modeling)
Expanded form
DEFINITION
a straight line passing through the
center of a figure or body; especially
: a line segment through the center
of a circle with its ends on the
circle's circumference
an algebra property which is used to
multiply a single term and two or
more terms inside a set of
parentheses
the line where two plane faces of a
solid meet <an edge of the cube>
a statement of the equality of two
mathematical expressions
A way to write numbers by showing
the value of each digit
A flat surface of a solid figure
Faces
Improper fraction
A fraction which has a larger
numerator than denominator
Intersecting (lines)
Lines that intersect in a point are
called intersecting lines
Inverse operation
The quantity which cancels out a
given quantity
CURRICULUM OPPORTUNITIES
NUMBER OF
EXPOSURES
Mean
Another word for average. Mean
almost always refers to arithmetic
mean.
Meter – 3.28 feet
Metric units
Liter – 33.824 fluid ounces
(meter, liter, gram) Gram - 0.035 ounces
Millions
Numerical unit between thousands
and billions
Mixed numbers
Mixed numbers have a whole
number part and a fraction part
Parallel (lines)
Lines that never cross and are
always the same distance apart
Perpendicular
(lines)
Plane
At a 90° angle
A flat surface extending in all
directions; two-dimensional figure
Polygon
A closed plane figure for which all
sides are line segments. The name
of a polygon describes the number
of sides
Proper fraction
A fraction with a smaller numerator
than denominator
Quadrilateral
A polygon with four sides.
Radius
A line segment between the center
and a point on the circle or sphere.
A part of a line starting at a
particular point and extending
infinitely in one direction
Ray
Standard form
Thousandths
A way to write numbers by using the
digits 0-9, with each digit having a
place value
the place value that represents one
thousandth of a whole. It is also one
tenth of a hundredth and one
hundredth of a tenth
Types of triangles
(isosceles,
equilateral,
scalene, right,
acute, obtuse)
Isosceles – triangle with two sides
that are the same length
Equilateral – A triangle with three
congruent sides.
Scalene – A triangle for which all
three sides have different lengths.
Right – A triangle which has a right
(90°) interior angle.
Acute – A triangle for which all
interior angles are acute.
Obtuse – A triangle which has an
obtuse angle as one of its interior
angles.
Variable
A quantity that can change or that
may take on different values
A corner point of a geometric figure
Vertex or verticles
X, y axis
x-axis - the horizontal axis of a twodimensional plot
y-axis - The vertical axis of a twodimensional plot