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# Vocabulary math

Term | Definition |
---|---|

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