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Basic Math Review
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Gravity
Key Concepts:
Terms in this set (69)
absolute value
The distance of a number from zero on the number line.
acute triangle
A triangle with no angle measuring 90o or more.
addend
Any number being added.
additive inverses
Two numbers whose sum is 0. Numbers that are opposites.
algebraic expression
A group of numbers, symbols, and variables that express an operation or a series of operations.
algorithm
A step-by-step method for computing.
area
The measure, in square units, of the interior region of a 2-dimensional figure or the surface of a 3-dimensional figure.
Associative Property of Addition
The sum stays the same when the grouping of addends is changed.
Associative Property of Multiplication
The product stays the same when the grouping of factors is changed.
axis
A reference line from which distances or angles are measured in a coordinate grid.
box plot
A diagram that shows the five number summary of a distribution.
coefficient
A numerical factor in a term of an algebraic expression.
common denominator
For two or more fractions, a common denominator is a common multiple of the denominators.
Commutative Property of Addition
The sum stays the same when the order of the addends is changed.
Commutative Property of Multiplication
The product stays the same when the order of the factors is changed.
constant
A number with a value that is always the same.
constant speed
Movement at a fixed (constant) distance per unit of time.
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.
coordinates
An ordered pair of numbers that identify a point on a coordinate plane.
cube
A rectangular solid having six congruent square faces.
data
Information, especially numerical information. Usually organized for analysis.
denominator
The quantity below the line in a fraction. It tells the number of equal parts into which a whole is divided.
Distributive Property
Allows you to multiply a sum by multiplying each addend separately and then add the products
dividend
A quantity to be divided.
divisor
The quantity by which another quantity is to be divided by.
dot plot
Also known as a line plot. A diagram showing frequency of data on a number line.
double number line diagram
A graphic diagram that shows a proportional relationship between two quantities.
equation
A statement that two mathematical expressions are equal.
equilateral triangle
A triangle whose sides are all the same length.
equivalent ratio
If two ratios have the same value when simplified.
evaluate
To find the value of a mathematical expression.
expression
A variable or combination of variables, numbers, and symbols that represents a mathematical relationship.
factor
An integer that divides evenly into another.
formula
A general mathematical statement or rule.
greatest common factor
The largest factor of two or more numbers.
histogram
A bar graph in which the labels for the bars are numerical intervals.
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 symbols <, >, ≤, ≥, or ≠.
infinite
Having no boundaries or limits.
integers
The set of whole numbers and their opposites.
isosceles triangle
A triangle that has at least two congruent sides.
least common multiple
The smallest common multiple of a set of two or more numbers.
less than
Less than is 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.
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.
multiple
The product of a whole number and any other whole number.
negative numbers
Numbers less than 0.
number line
A diagram that represents numbers as points on a line.
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 90o (obtuse angle) and two acute angles.
Order of Operations
Rules describing what sequence to use in evaluating expressions.
origin
The intersection of the x- and y-axes in a coordinate plane, described by the ordered pair (0, 0).
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.
positive numbers
Numbers that are greater than zero.
product
The result of multiplication.
proportion
An equation showing that two ratios are equivalent.
quadrilateral
A four-sided polygon.
quotient
The result of the division of one quantity by another.
rate
A ratio comparing two different units.
ratio
A comparison of two numbers using division.
right triangle
A triangle that has one 90o angle.
scalene triangle
A triangle that has no congruent sides.
sum
The result of addition.
unit rate
A rate with a denominator of 1.
variable
A quantity that changes or can have different values. A symbol, usually a letter, that can stand for a variable quantity.
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