# data[].attributes.headline
Variable - A symbol usually a letter used to represent a number.  

# data[].attributes.subject
Variable - A symbol usually a letter used to represent a number.  

# data[].attributes.headline
Properties - Statements that are true for any number. 

# data[].attributes.subject
Properties - Statements that are true for any number. 

# data[].attributes.headline
Powers - Numbers expressed using exponents. 

# data[].attributes.subject
Powers - Numbers expressed using exponents. 

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Perfect Square - Numbers with square roots that are whole numbers.  25 is the perfect square because the square root of 25 is 5. 

# data[].attributes.subject
Perfect Square - Numbers with square roots that are whole numbers.  25 is the perfect square because the square root of 25 is 5. 

# data[].attributes.headline
Numerical Expression - A combination of numbers and operations. 

# data[].attributes.subject
Numerical Expression - A combination of numbers and operations. 

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Like Terms - Terms that contain the same variables to the same power.  

# data[].attributes.subject
Like Terms - Terms that contain the same variables to the same power.  

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Identity Properties - Properties that state that the sum of any number an zero equals the number and that the product of any number and one equals the number. 

# data[].attributes.subject
Identity Properties - Properties that state that the sum of any number an zero equals the number and that the product of any number and one equals the number. 

# data[].attributes.headline
Factor the Expression - The process of writing numeric or algebraic expressions as a product of their factors.  

# data[].attributes.subject
Factor the Expression - The process of writing numeric or algebraic expressions as a product of their factors.  

# data[].attributes.headline
Exponent - In a power the number that tells how many times the base is used as a factor in 5 to the 3rd power, the exponent is 3.  

# data[].attributes.subject
Exponent - In a power the number that tells how many times the base is used as a factor in 5 to the 3rd power, the exponent is 3.  

# data[].attributes.headline
Evaluate - To find the value of the algebraic expression by replacing variables with numbers.  

# data[].attributes.subject
Evaluate - To find the value of the algebraic expression by replacing variables with numbers.  

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Equivalent Expressions - Expressions that have the same value.

# data[].attributes.subject
Equivalent Expressions - Expressions that have the same value.

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Distributive Property - To multiply a sum by a number multiply each addenda by the number outside of the parentheses.  

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Distributive Property - To multiply a sum by a number multiply each addenda by the number outside of the parentheses.  

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Defining the Variable - Choosing a variable and deciding what the variable represents.

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Defining the Variable - Choosing a variable and deciding what the variable represents.

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Commutative Properties - The order in which numbers are added or multiplied does not change the sum or product.  

# data[].attributes.subject
Commutative Properties - The order in which numbers are added or multiplied does not change the sum or product.  

# data[].attributes.headline
Coefficient - The numerical factor of a term that contains a variable.

# data[].attributes.subject
Coefficient - The numerical factor of a term that contains a variable.

# data[].attributes.headline
Associative Properties - The way in which numbers are group, does not change the sum or product. 

# data[].attributes.subject
Associative Properties - The way in which numbers are group, does not change the sum or product. 

# data[].attributes.headline
Algebraic Expression -A combinations of variables, numbers, and at least one operation.

# data[].attributes.subject
Algebraic Expression -A combinations of variables, numbers, and at least one operation.

# data[].attributes.headline
Algebra - A mathematical language of symbols including variables. 

# data[].attributes.subject
Algebra - A mathematical language of symbols including variables. 