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Math Words for Grades 6-8

Middle school math vocabulary: ratios, integers, expressions, equations, geometry and statistics.

79 cardsGrades 6–8#vocabulary#middle school

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79 cards
  • RatioWord
    A comparison of two quantities by division3 to 5, or 3:5
  • RateWord
    A ratio that compares two different kinds of units60 miles per hour
  • Unit rateWord
    A rate with 1 as the second quantity$2 per pound
  • ProportionWord
    An equation that says two ratios are equal
  • PercentWord
    A ratio out of 100
  • IntegerWord
    A whole number or its opposite: ..., −2, −1, 0, 1, 2, ...
  • Rational numberWord
    A number that can be written as a fraction of two integers
  • Irrational numberWord
    A number that cannot be written as a fraction; its decimal never ends or repeatsπ, √2
  • Real numbersWord
    All rational and irrational numbers together
  • Absolute valueWord
    A number's distance from zero on the number line
  • Opposite numbersWord
    Two numbers the same distance from zero on opposite sides5 and −5
  • Negative numberWord
    A number less than zero
  • Greatest common factor (GCF)Word
    The largest factor two numbers share
  • Least common multiple (LCM)Word
    The smallest multiple two numbers share
  • Prime factorizationWord
    Writing a number as a product of primes12 = 2 × 2 × 3
  • ExponentWord
    A small raised number that tells how many times to use the base as a factor
  • BaseWord
    The number that is multiplied by itself in a power
  • PowerWord
    A number written with a base and an exponent
  • Square rootWord
    A number that, multiplied by itself, gives the original number
  • Scientific notationWord
    Writing a number as a number from 1 to 10 times a power of 103.2 × 10^4
  • TermWord
    A number, variable, or product in an expression
  • CoefficientWord
    The number multiplied by a variableIn 7x, the coefficient is 7
  • ConstantWord
    A term that does not change; a plain number
  • Like termsWord
    Terms with the same variable part3x and 5x
  • InequalityWord
    A statement that two values are not equalx > 4
  • SolutionWord
    A value that makes an equation or inequality true
  • SlopeWord
    How steep a line is; rise over run
  • Y-interceptWord
    The point where a graph crosses the y-axis
  • FunctionWord
    A rule that gives exactly one output for each input
  • InputWord
    The value you put into a function
  • OutputWord
    The value that comes out of a function
  • Linear equationWord
    An equation whose graph is a straight line
  • QuadrantWord
    One of the four regions of a coordinate plane
  • OriginWord
    The point (0, 0) where the axes cross
  • Pythagorean theoremWord
    In a right triangle, a² + b² = c²
  • HypotenuseWord
    The longest side of a right triangle, opposite the right angle
  • LegsWord
    The two shorter sides of a right triangle
  • CircumferenceWord
    The distance around a circle
  • RadiusWord
    The distance from the center of a circle to its edge
  • DiameterWord
    The distance across a circle through its center; twice the radius
  • Pi (π)Word
    The ratio of a circle's circumference to its diameter; about 3.14159
  • Surface areaWord
    The total area of all the faces of a solid
  • PrismWord
    A solid with two identical parallel bases and rectangular sides
  • PyramidWord
    A solid with one base and triangular faces that meet at a point
  • NetWord
    A flat pattern that folds up into a solid
  • Similar figuresWord
    Shapes with the same angles and proportional sides
  • Scale factorWord
    The number you multiply lengths by to enlarge or shrink a figure
  • TransformationWord
    A move that changes a figure's position or size
  • TranslationWord
    Slide a figure without turning or flipping it
  • ReflectionWord
    Flip a figure over a line
  • RotationWord
    Turn a figure around a point
  • DilationWord
    Enlarge or shrink a figure from a center point
  • Complementary anglesWord
    Two angles that add up to 90 degrees
  • Supplementary anglesWord
    Two angles that add up to 180 degrees
  • Vertical anglesWord
    Opposite angles formed by two crossing lines; they are equal
  • Adjacent anglesWord
    Two angles that share a side and a vertex
  • TransversalWord
    A line that crosses two or more other lines
  • MeanWord
    The average of a set of numbers
  • MedianWord
    The middle value of ordered data
  • ModeWord
    The most frequent value
  • RangeWord
    Greatest value minus least value
  • OutlierWord
    A value far from the rest of the data
  • QuartileWord
    One of the three values that split ordered data into four equal parts
  • Interquartile range (IQR)Word
    The third quartile minus the first quartile
  • Box plotWord
    A graph that shows the median, quartiles and extremes of data
  • HistogramWord
    A bar graph with no gaps that shows how data are spread across intervals
  • ProbabilityWord
    A number from 0 to 1 that tells how likely an event is
  • Sample spaceWord
    The set of all possible outcomes
  • Compound eventWord
    An event made of two or more simple events
  • VariableWord
    A letter that stands for a number that can change
  • EvaluateWord
    Find the value of an expression by putting in numbers
  • SimplifyWord
    Rewrite an expression in its simplest form
  • Inverse operationWord
    An operation that undoes another
  • ReciprocalWord
    The number that multiplies with another to make 1The reciprocal of 3/4 is 4/3
  • Terminating decimalWord
    A decimal that ends0.25
  • Repeating decimalWord
    A decimal with a digit or group of digits that repeats forever0.333...
  • MarkupWord
    An amount added to a cost to set the selling price
  • DiscountWord
    An amount subtracted from a price
  • Simple interestWord
    Interest earned only on the starting amount: I = Prt

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