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Algebra I
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Key Concepts:
Terms in this set (16)
Algebraic Expression
Consists of sums and or products of numbers and variables.
Variables
Are symbols used to represent unspecified numbers or values.
Term
An expression may be a number, a variable, or a product or quotient of numbers and variables
Exponents
Indicates the number of times the base is used as a factor
Step 1 of Orders of Operations
Evaluate expressions inside grouping symbols
Step 2 of Orders of Operations
Evaluate all powers
Step 3 of Orders of Operations
Multiply and or divide from left to right
Step 4 of Orders of Operations
Add or Subtract from left to right
Reflexive Property
Any quantity is equal to itself
Symmetric Property
If a = b, then b = a.
Transitive Property
If one quantity equals a second quantity and the second quantity equals a third quantity, then the first quantity equals the third quantity.
Substitution Property
A quantity may be substituted for its equal in any expression
Additive Identity
For any number a, the sum of a and 0 is a
Additive Inverse
A number and its opposite are additive inverses of each other
Commutative Property
The order in which you add or multiply numbers does not change their sum or product.
Associative Property
The way you group three or more numbers when adding or multiplying does not change their sum or product.
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