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# Vocabulary math

TermDefinition
absolute value The distance the number is from zero on a number line
Angle Two rays with a common endpoint form an angle. The rays and vertex are used to name the angle
Area Amount of surface measured in square units
balance Total amount of money in a bank account
Base In a power, the number used as a factor
Center The point from which all points on a circle are the same distance
Circumference The distance around a circle
Complementary angles Two angles are complementary if the sum of their measures is 90°
Congruent Having the same measure
Consecutive Whole numbers Whole numbers that increase by 1, such as the numbers 3, 4, 5, and 6
Constant A term that does not contain a variable
Cubed The product in which a number is a factor three times
Dependent variable The variable in a relation with a value that depends on the value of the independent variable
deposit Putting money in a bank account
Diameter The distance across a circle through its center
Discount A percentage that is subtracted from a number
Enlargement An image larger than the original
Equilateral In a polygon, all of the sides are congruent
Estimation The process of using rounding to approximate an answer
Evaluate To find the value of an expression
Exponent Number that shows how many times the base is used as a factor
Face A flat surface of a polyhedron
Factors Two or more numbers that are multiplied together to form a product
Function A relationship which assigns exactly one output value for each input value
Graph The process of placing a point on a number line or on a coordinate plane at its proper location
Gratuity Also known as a tip. It is a small amount of money in return for a service
Greatest Common Factor(GCF) The greatest whole number that is a factor of two or more given whole numbers
Height The perpendicular distance between the bases. In a triangle, the perpendicular distance from the opposite vertex to the base line
Improper fraction A fraction whose numerator is greater than or equal to its denominator
Independent Variable The variable in a function with a value that is subject to change
Inequality An open sentence that uses <. >, ≤ , ≠ , ≥ to compare two quantities
Integer All positive and negative whole numbers, including zero
Interest The amount of money paid for the use of money
Inverse Opposite operations
Least common denominator (LCD) The least common multiple of the denominators of two or more fractions. You can use the LCD to compare fractions
Least common multiple(LCM) The least number that is a multiple of two or more nonzero given numbers
Like fractions Fractions that have the same denominators
Like terms Terms that contain the same variables raised to the same power
Line A straight line extending in both directions without end
Linear Forming a straight line
Lowest terms When both a fraction's numerator and denominator can only be divided by one
Markdown An amount by which the regular price of an item is reduced
Markup The amount the price of an item is increased above the price the store paid for the item
Mean The sum of the data divided by the number of items in the data set. Also called average
Median The number that falls in the middle when data are listed from least to greatest. If the number of data is even, the median is the mean of the two middle numbers
Midpoint The point of a segment that divides it into two congruent segments
Mixed number A number that is expressed as the sum of a whole number and a fraction less than 1
Mode The number from a set of data that occurs with the greatest frequency
Opposites Two integers are opposites if they are represented on the number line by points that are the same distance from zero, but on opposite sides of zero. The sum of two opposites is zero
Order of Operations The rules to follow when more than one operation is used in a numerical expression. PEMDAS
Ordered pair A pair of numbers used to locate a point in the coordinate plane. An ordered pair is written in the form (x-coordinate, y-coordinate)
Origin The point at which the x-axis and the y-axis intersect the coordinate plane. The origin is (0,0)
Outcome Any one of the possible results of an action
overdraft Taking more money out than what is in the bank account
Parallel lines Lines in a plane that never intersect
Percent The ratio of a number to 100, shown by the symbol %
Percent of change A ratio that compares the change in a quantity to the original amount
Perfect squares Numbers with square roots that are whole numbers.
Perimeter The distance around a figure
Perpendicular lines Lines that meet or cross each other to form right angles
pi The ratio of the circumference of a circle to its diameter
Point The simplest figure in geometry, pictured by a dot
Powers Numbers expressed using exponents
Precision The ability of a measurement to be consistently reproduced
Prime factorization An expression showing a positive integer as the product of prime factors
Principal The amount of money deposited or borrowed
Probability The chance that some event will happen. It is the ratio of the number of favorable outcomes to the number of possible outcomes
Proper fraction A fraction whose numerator is less than its denominator
Proportion An equation stating that two ratios or rates are equivalent
Quadrant One of the four regions into which the two perpendicular number lines of the coordinate plane separate the plane
Radius The distance from the center of a circle to any point on the circle
Range The difference between the greatest and least data value
Rate A ratio that compares two quantities with different kinds of units
Ratio A quotient of two numbers or two measures in the same units
Ray A part of a line with one endpoint
Reciprocal The multiplicative inverse of a number
Rectangle A parallelogram having four right angles
Reduce Smaller than the original
Replacement set The given set of numbers that a variable may represent
Right angle Angle that measures 90°
Rounding A method of approximating a number
Sales tax An additional amount of money charged on items that people buy
Sample space The set of all possible outcomes of a probability experiment
segment Part of a line that connects two points
Selling price The amount the customer pays for an item
Semicircle Half a circle
Sequence An ordered list of numbers, such as 0, 1, 2, 3 or 2, 4, 6, 8
Similar figures Figures that have the same shape but not necessarily the same size
Simple interest The amount paid or earned for the use of money. The formula for simple interest is I=prt
Simplify Write an expression in simplest form
Slope The rate of change between any two points on a line. It is the ratio of vertical change to horizontal change. The slope tells how steep the line is.
Solution A replacement value for the variable in an open sentence. A value for the variable that makes the equation true
Square root The factors multiplied to form perfect squares
Squared The product of a number and itself
Surface area The sum of the areas of all the surfaces (faces) of a three-dimensional figure
Term Each number in a sequence
Tip Also known as gratuity, it is a small amount of money in return for a service
Unit rate A rate that is simplified so that it has a denominator of 1 unit
Unlike fractions Fractions with different denominators
Variable A symbol, usually a letter, used to represent a number in mathematical expressions or sentences
Vertex A vertex of an angle is the common endpoint of the rays forming the angle
Vertical angles Opposite angles formed by the intersection of two lines. Vertical angles are congruent
Volume The number of cubic units needed to fill the space occupied by a solid
withdrawal Taking money out of a bank account
x-axis The horizontal number line in a coordinate plane
y-axis The vertical number line in a coordinate plane
Created by: PLARSEN