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5th grade STAR math vocabulary review
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Gravity
Math terms students need to know for the STAR math test
Terms in this set (76)
acute angle
An angle measuing more than 0 degrees and less than 90 degrees
congruent
Having the same size and shape
factor
A number that is multiplied by another number to find a product
equivalent
Having equal value
inverse
Reversed position or direction
vertex (vertices - plural)
A Corner; point at which two line segments, lines, or rays meet to form an angle; point where three or more faces intersect
common denominator
A number that is a multiple of all denominators in a problem.
polygon
Three or more line segments in a plane that forms a closed figure. The line segments never cross but meet at their endpoints.
product
The answer to a multiplication problem. The result of multiplying two or more factors.
prime number
A number with exactly two factors: the number itself and one.
range
The difference between the least and greatest values in a set of numbers.
scalene triangle
A triangle with sides of different lengths and no two angles are the same.
area
Surface space that is measured in square units.
perimeter
The distance around a figure.
circumference
The distance around a circle (the perimeter of a circle).
angle
The figure formed when two lines meet at a common endpoint called a vertex.
common factor
A number that is a factor of two or more numbers.
diameter
A line segment that passes through the center of a circle and has its endpoints on the circle. It describes how wide the circle is.
greatest common factor (GCF)
The largest single factor for two or more numbers.
hexagon
A polygon with six sides.
integers
All whole numbers (both positive and negative) and zero.
mean
The sum of a group of numbers divided by the number of numbers. Also known as the average.
median
A value found by ordering a group of data from least to greatest and choosing the middle value of the group.
mode
In a group of values, the value that occurs most often.
numerator
The top number of a fraction; how many parts of a whole or group are included in the fraction.
quadrilateral
A polygon that has four sides.
parallelogram
A quadrilateral with two pairs of congruent, parallel sides.
rectangle
A parallelogram with four right angles
composite number
A positive whole number with more than two factors. In other words, a number that is not prime.
denominator
The bottom number of a fraction; the total number of equal parts
improper fraction
A fraction with a numerator that is larger than or equal to its denominator.
least common multiple (LCM)
The smallest multiple that two or more numbers have in common
mixed number
A value that combines a whole number and a fractional amount
octagon
An eight-sided polygon
parallel lines
Lines that do not intersect. //
percent
The ratio of a number to 100 (per one hundred). %
prime factorization
Breaking down a composite number until all of the factors are prime
probability
The likelihood that an event will occur.
radius
A length that is half the diameter of a circle; the distance from the center to the outside of the circle
right angle
An angle that measures 90 degrees
right triangle
A triangle with one right angle
order of operations
Rules that tell which steps to follow when solving an expression.
inverse operations
Operations that do the exact opposite of each other; they undo each other (addition and subtraction, for example)
lowest terms
A fraction with all common factors (other than 1) factored out of the numerator and denominator
prism
A solid figure that has two congruent, parallel polygons as its bases. Its sides are parallelograms
ratio
A comparison of the two values of two numbers
simplify
To make a fraction easier to work with by taking out common factors. To write in lowest terms.
square unit
A unit for measuring area
x-axis
The horizontal number line of a coordinate graph
y-axis
The vertical number line of a coordinate graph
x-coordinate
The value on the x-axis used to locate a point on the coordinate graph. It is the first value in an ordered pair.
y-coordinate
The value on the y-axis used to locate a point on the coordinate graph. It is the second value in an ordered pair.
difference
The answer to a subtraction problem.
sum
The answer to an addition problem.
array
A rectangular arrangement of objects in rows and columns.
equilateral triangle
A triangle with equal sides and equal angles.
estimate
Find an approximate answer for a problem. Round the numbers before working the problem.
even number
A whole number ending with 0, 2, 4, 6, or 8 in the ones place.
odd number
A whole number ending with 1, 3, 5, 7, or 9 in the ones place.
quotient
The answer to a division problem
divisor
The number by which a number is divided
dividend
The number to be divided in a division problem
face
The flat surface of a polyhedron
capacity
The measure of the amount of a substance that a container will hold
minimum
The smallest number in a set of data
maximum
The largest number in a set of data
area
The amount of space inside a 2-dimensional figure
obtuse angle
An angle with a measurement greater than 90 degrees but less than 180 degrees
concentric circles
Circles that have the same center but radii of different lengths
perpendicular lines
Lines that meet or cross at right angles
rhombus
A parallelogram whose four sides and opposite angles are congruent.
translation
A transformation that moves all of the points of a figure the same distance in the same direction; a slide
rotation
A transformation that turns a figure around a fixed point; a spin
reflection
A transformation that produces a mirror image of a figure; a flip
horizontal
left to right; parallel to the horizon
vertical
straight up and down; perpendicular to the horizon
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