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Pairs of numbers whose product is 1:

1/3 and 3 are reciprocals.

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The answer to a division problem.

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The answer to an addition problem.

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Given several denominators, the smallest expression that is divisible by all the denominators is called the least common denominator.

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A whole number and a fraction written together and understood to be their sum.

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The answer to a subtraction problem.

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A number that indicates how many times a factor is repeated:

Given 23 the exponent is three.

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The number that is a repeated factor when written with an exponent:

Given 23 the base is two.

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A number or letter (variable) written with an exponent:

Examples: 23 or x6.

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Parentheses, ( ), square brackets, [ ], or fraction bars.

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A variable is a symbol used to represent an unknown number:

In the term 3x the variable is x.

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Any collection of numbers or variables joined by the basic operations of addition, subtraction, multiplication, or division (except by zero), or the operation of taking roots.

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A statement that two algebraic expressions are equal:

Example: 4x = 5y.

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Any replacement for the variable that makes the equation true.

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A collection of objects.

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- Natural numbers
- Whole numbers
- Numerator
- Denominator
- Factor
- Product
- Factored
- Prime number
- Composite number
- Greatest common factor (GCF)
- Lowest terms
- Reciprocals
- Quotient
- Sum
- Least common denominator (LCD)
- Mixed number
- Difference
- Exponent (power)
- Base
- Exponential expression
- Grouping symbols
- Variable
- Algebraic expression
- Equation
- Solution of an equation
- Set
- Elements (members)
- Number line
- Negative number
- Positive number
- Signed numbers
- Integers
- Graph of a number
- Rational numbers
- Set-builder notation
- Irrational numbers
- Real numbers
- Additive inverse
- Absolute value
- Multiplicative inverse (reciprocal)
- Commutative property of addition
- Commutative property of multiplication
- Associative property of addition
- Associative property of multiplication
- Identity property
- Inverse property
- Distributive property
- Term
- Numerical coefficient
- Like terms
- Unlike terms
- Combining like terms

- Upcoming Classes
- Solar Energy
- History of Modern Astronomy
- Newton’s third law of motion
- Motion
- Buoyancy
- The Effects of Radiation on Living Things

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