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6th Grade Math Vocabulary
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Gravity
Terms in this set (145)
acute triangle
A triangle with no angle measuring 90 degrees or more
addend
Any number being added.
additive inverses
To numbers whose sum is 0 are additive inverses or one another.
algorithm
A step - by - step method for computing
area
The measure, in square unites, of the interior region of a 2-dimensional figure or the surface of a 3-dimensional figure.
associative property of multiplication
The product stays the same when the grouping of factors is changed. (a x b) x c = a x (b x c), where a, b, and c stand for any real numbers.
absolute value
The distance of a number from zero on the number line. Always positive.
additive identity property of 0
Adding zero to a number gives a sum identical to the given number.
algebraic expression
A group of numbers, symbols, and variables that express an operation or a series of operations.
altitude
The perpendicular distance from a vertex to the opposite side of a plane figure.
associative property of addition
The sum stays the same when the grouping of addends is changed.
(a+b)+c=a+(b+c), where a, b, and c stand for any real numbers.
attribute
A characteristic. e.g. size, shape, or color
axis
A reference line from which distances or angles are measured in a coordinate grid. (plural - axes)
box plot
A diagram that shows the five number summary of a distribution. (Five number summary includes lowest value, lower quartile, median, upper quartile, and highest value.)
common denominator
For two or more fractions, this is a common multiple of the denominators.
common multiple
Any common multiple of two or more numbers.
commutative property of multiplication
The product stays the same when the order of the factors is changed. a x b = b x a, where a and b are any real numbers.
constant
A number with a value that is always the same.
base of a polygon
The side of a polygon that is perpendicular to the altitude or height
coefficient
A numerical factor in a term of an algebraic expression.
common factor
Any common factor of two or more numbers.
commutative property of addition
The sum stays the same when the order of the addends is changed. a + B = b + a, where a and b are any real numbers/
compose
To put together, as in numbers or shapes.
coordinate plane
A 2-dimensional system in which the coordinates of a point are its distances from two intersecting, usually perpendicular, straight lines called axes. (Also called coordinate grid or coordinate system.)
coordinates
An ordered pair of numbers that identify a point on a coordinate plane.
data
Information, especially numerical information. Usually organized for analysis.
denominator
To separate into components or basic elements.
difference
The amount that remains after one quantity is subtracted from another.
dividend
A quantity to be divided
coordinate system
Also known as a coordinate grid. A 2-dimensional system in which the coordinates of a point are its distances from two intersecting, usually perpendicular, straight lines called axes.
cube
A rectangular solid having six congruent square faces.
decompose
To separate into components or basic elements
dependent variable
In a function, a variable whose value is determined by the value of the related independent variable.
distributive property
a x (b + c) = (a x b) + (a x c) and a x (b - c) = (a x b) - (a x c), where a, b, and c stand for any real numbers.
divisor
The quantity by which another quantity is to be divided.
line plot
Also known as a data plot. A diagram showing frequency of a data on a number line.
equilateral triangle
A triangle whose sides are all the same length.
equivalent ratio
two ratios have the same value when simplified
exponent
The number that tells how many equal factors there are.
factor
An integer that divides evenly into another.
formula
A general mathematical statement or rule.
equation
A statement that two mathematical expressions are equal.
evaluate
To find the value of a mathematical expression.
expression
A variable or combination of variables, numbers, and symbols that represents a mathematical relationship.
first quartile
The first quartile is the middle (the median) of the lower half of the data on a box plot. One-fourth of the data lies below the first quartile and three-fourths lies above. Also known as Q1.
fraction
A way of representing part of a whole or part of a group by telling the number of equal parts in the whole and the number of parts you are describing.
graph
A pictorial device used to show a numerical relationship.
height
The perpendicular distance from a vertex to the opposite side of a plane figure.
improper fraction
A fraction with a numerator greater than (or equal to ) its denominator.
inequality
A mathematical sentence that compares two unequal expressions using one of the following symbols <, >, ≤,≥, or ≠
integers
The set of whole numbers and their opposites.
isosceles triangle
A triangle that has at least two congruent sides.
independent variable
A variable in a mathematical equation whose value determines that of a dependent variable
infinite
Having no boundaries or limits
interquartile range
The difference between the upper quartile and the lower quartile.
least common multiple
LCM. The smallest common multiple of a set of two or more numbers.
less than
used to compare two numbers when the first number is smaller than the second number.
maximum
The largest amount; the greatest number in a data set
measures of central tendency
An average; a single value that is used to represent a collection of data. Three commonly used types of averages are mode, median, and mean (also called measures of central tendency or measures of average)q
metric system
A system of measurement based on tens. The basic unit of capacity is the liter. The basic unit of length is the meter. The basic unit of mass is the gram.
minuend
In subtraction, this is the number you subtract from.
multiple
The product of a whole number and any other whole number.
lower extreme
The smallest or least number out of a data set, usually farther away from interquartile range than other data in set. (Also known as minimum.)
mean
The sum of a set of numbers divided by the number of elements in the set. (A type of average)
median
The middle number of a set of numbers when the numbers are arranged from least to greatest, or the mean of two middle numbers when the set has two middle numbers.
minimum
The smallest amount; the smallest number in a data set.
mixed number
A number with an integer and a fraction part.
multiplicative identity property of 1
The product of any number and 1 is equal to the original number.
multiplicative inverses
Two numbers whose product is 1. Also called reciprocals.
net
A 2-dimensional shape that can be folded into a 3-dimensional figure
numerator
The number or expression written above the line in a fraction.
obtuse triangle
A triangle that contains one angle with a measure greater than 90 degrees (obtuse angle) and two acute angles.
order of operations
Rules describing what sequence to use in evaluating expressions.
1) Evaluate within grouping symbols.
2) Do powers or roots
3) Multiply or divide left to right
4) add or subtract left to right
origin
The intersection of the x- and y-axes in a coordinate plane, described by the ordered pair (0, 0).
negative numbers
numbers less than 0
number line
A diagram that represents numbers as points on a line.
numerical expression
A mathematical statement including numbers and operations.
opposite
having a different sign but the same numeral.
ordered pair
A pair of numbers that gives the coordinates of a point on a grid in this order (horizontal coordinate, vertical coordinate). Also known as a coordinate pair.
outlier
A number in a set of data that is much larger or smaller than most of the other numbers in the set.
percent
A special ratio that compares a number to 100 using the symbol, %.
polygon
A closed figure formed from line segments that meet only at their endpoints.
prism
A 3-dimensional figure that has two congruent and parallel faces that are polygons. The remaining faces are parallelograms.
proportion
An equation showing that two ratios are equivalent.
quadrants
The four sections of a coordinate grid that are separated by axes.
quantity
An amount
plot
To place points on a graph or coordinate plane.
positive numbers
numbers that are greater than zero
product
the result of multiplication
pyramid
A polyhedron whose base is a polygon and whose other faces are triangles that share a common vertex.
quadrilateral
A four sided polygon
quotient
The result of the division of one quantity by another.
range
The difference between the greatest number and the least number in a set of numbers.
ratio
A comparison of two numbers using division.
rational number
A number that can be expressed as a ratio of two integers.
reciprocals
Two numbers whose product is 1. Also called multiplicative inverses.
scalene triangle
A triangle that has no congruent sides.
spread
A measure of how much a collection of data is spread out. Commonly used types included range and quartiles.
rate
A ratio comparing two different units
rectangle
A quadrilateral with two pairs of congruent, parallel sides and four right angles.
right rectangular prism
A prism with 6 rectangular faces where the lateral edge is perpendicular to the plane of the base.
right triangle
A triangle that has one 90 degree angle.
solid figure
A geometric figure with 3 dimensions.
square-based pyramid
A polyhedron whose base is a square and whose other faces are triangles that share a common vertex.
statistics
The science of collecting, organizing, representing and interpreting data.
subrahend
in subtraction, the subtrahend is the number being subtracted.
surface area
The total area of the faces (including the bases) and curved surfaces of a solid figure.
term
A number, variable, product, or quotient in an expression. A term is not a sum or difference.
three-dimensional
3-D. Existing in 3 dimensions; having length, width, and height.
substitution
The replacement of the letters in an algebraic expression with known values.
sum
The result of addition.
table
An organized way to list data. Tables usually have rows and columns of data.
third quartile
The third quartile is the middle (the median) of the upper half of the data on a box plot. One-fourth of the data lies above the third quartile and three-fourths lies below. Also known as Q3.
triangular prism
A prism with three rectangular faces and two triangular bases where the lateral edge is perpendicular to the plane of the base.
unit cube
A precisely fixed quantity used to measure volume.
unit rate
A rate with a denominator of 1
value
The amount something is worth.
vertex
The point at which two line segments or rays meet to form an angle (pl-vertices)
whole numbers
Any of the numbers 0, 1, 2, 3, 4, 5, and so on.
x-coordinate
in an ordered pair, the value that is always written first.
y-coordinate
in an ordered pair, the value that is always written second
upper extreme
The greatest or largest number out of a data set from interquartile range that other data in set.
variable
A quantity that changes or can have different values. A symbol, usually a letter, that can stand fro a variable quantity.
volume
The number of cubic units it takes to fill a figure.
x-axis
In a Cartesian plane the horizontal axis .
y-axis
In a Cartesian plane the vertical axis .
base of an exponent
The number that is raised to a power.
plane
A flat surface that extends infinitely in all directions.
simplify
To express a fraction in simplest form.
supplementary angles
If the sum of the measures of two angles is 180 degrees, then the two angles are supplementary. If two angles form a straight line, then they are supplementary.
prime number
A whole number greater than 0 that has exactly two different factors, 1 and itself.
diameter
a line segment that passes through the center of the circle with endpoints on the circle.
sequence
A set of numbers arranged in a special order or pattern.
complementary angles
Two angles are complementary if they add up to 90 degrees (right angle). They don't have to be next to each other.
terminating decimal
A decimal which has a finite number of digits .
square unit
A unit, such as square centimeter or square inch, used to measure area.
convert
to change the form of a measurement, to different units, without a change in the size or amount.
mode
the most frequently occurring number in a data set. There can be more than one or no mode.
non-terminating decimal
A decimal number that continues infinitely, or without end.
similarity
Polygons are 'similar' if they are exactly the same shape, but can be different sizes
pi
The ratio of a circle's circumference to its diameter. Equal to 3.14159265358979323846... (the digits go on forever without repeating) A rough approximation is 22/7 = 3.14
circumference
The distance around a circle, which equals a little more than three times its diameter.
triangular pyramid
A pyramid with a triangular base.
equivale
To find the value of a mathematical expression.
coordinate pair
A pair of numbers that gives the coordinates of a point on a grid in this order (horizontal coordinate, vertical coordinate). Also known as an ordered pair.
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