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Pre-algebra vocab list

Terms

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Equation
A mathematical sentence that contains an equal sign.
y-coordinate
The last coordinate of an ordered pair.
Bar Graphs
A Graph used that shows comparison between data.
Simplified
When no other work can be done to a problem.
Integers
The set of numbers that consist of {...,-2, -1, 0. 1, 2, ...}
x-axis
The axis on the coordinate plane that runs horizontal that divides the plane.
Distributive Property
For any numbers a, b, and c, a(b+c)=ab+ac.
Scientific Notation
Used to represent numbers that are very large or very small in a more simplified way in order to be able to use the numbers more easily.
Factors
The numbers in a multiplication Problem.
y-axis
The axis on the coordiate plane that runs vertical that divides the plane.
Frequency Table
A table used to show how many times an event occurs.
Multiplicative Identity Property
For any number a, a X 1=a.
Commutative Property of Multiplication
ab=ba
x-coordinate
The first coordinate of an ordered pair.
Circle Graph
A type of graph that is usually used to compare parts of a whole
Venn Diagrams
A diagram consisting of circles inside a rectangle which is used to show the relationship of sets.
Data
Information gathered for statistical information.
Percent
Means part per 100.
Base
b in the expression b to the Nth
Symmetric Property
For any numbers a and b, if a=b, then b=a.
Coordinate Plane
Formed by the intersection of two number lines.
Reflex property
For any number a, a=a.
Absolute Value
The distance a number is from zero
Substitution Property
For all numbers a and b, if a=b then a may be replaced with b.
Associative Property of Addition
For any numbers a, b, and c, a=(b+c)=(a+b)=c.
Median
The number in the middle after the numbers are arranged in order.
Unit Rate
A rate with a denominator of 1.
Extremes
In a proportion, the first and fourth terms.
Sample
A group that is used to represent a whole population.
Associative Property of Multiplication
For any numbers a, b, and c, a(bc)=(ab)c.
Linear Equation
An equation that, when graphed, forms a line.
Algebraic Expression
A combination of variables, number, and at least one operation.
Statistics
Information that has been collected, analyzed, and presented in an organized fashion.
Additive Idenitiy Property
For any numbera, a+0=a
Pictograph
A graph that uses a key to represent the data.
Coefficient
The numerical part of a term.
Product
The answer to a multiplication problem.
Equivalent Equations
Two or more equations with the same solution.
Line graphs
Graphs used to that shows changes over a period of time>
Evaluate
To replace variable with numbers and finding the numerical value of the expression.
Ratio
A comparison of two numbers.
Commutative Property of Addition
a+b=b+a
Union
The set that consists of everything in all the sets.
Exponents
Nth in the expression b to the Nth
Multiplicative Property of Zero
3(0)=0
Inequality
A mathematical sentence that contains <,>,<_, or _>.
Transitive Property
For any numbers a, b, and c, if a=b and b=c, then a=c.
Intersection
The point where lines cross.
Number line
A line with equal distance marked off to represent numbers.
Bar Notation
Notation used to show that a decimal repeats.
Order of Operations
Do all parenthesis, then all exponents, then all multiplication and division, and finally all additions and subtractions.
Like terms
Terms with the same variables.
Principal
In a simple interest problem, the money that is invested.
Mean
The average.
Quadrants
The regions in which a coordinate plane are divided.
Plot
A dot marking a point that represents a number on a number line or an ordered pair on a coordinate plane.
Real numbers
Set of all numbers.
Mixed Number
A number made up of a whole number and a fraction.
Repeating decimal
A decimal that does not end.
Origin
The center of the Cartesian coordinate plane (0,0).
Range
The difference between the largest and smallest numbers in a given set of data.
Rational numbers
Any number that can be written in the form a/b, where b is not equal to zero.
Mode
the number that appears the most in a set of data.
Terminating Decimal
Decimal that ends.
Solution
The answer to a question or a problem.
Probability
The chance that some event will happen.
Reciprocal
The multiplicatie inverse.
Ordered Pairs
A Pair of numbers used to graph points on the coordinate plane.
Percentage
In a percent proportion, a number that is compared to another number called the base.
Proportion
A statement of equality of two or more ratios.
Simple Interest
Found using the formula I=prt.
Variable
A place holder in a mathematical expression or sentence.
Whole numbers
Set of numbers that consist of {0, 1, 2, 3, ...}.

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