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Math Topic 2
Variables, Expressions, and Properties
Term | Definition |
---|---|
Algebraic Expression | A mathematical phrase that has at least one variable and one operation |
Associative Property of Addition | The way numbers are grouped does not affect the sum |
Variable | A quantity that can change or vary, often represented with a letter |
Input / output table | A table of related values |
Coefficient | The number that is multiplied by a variable in an algebraic expression Example: for 6x + 5, the coefficient is 6. |
Commutative Property of Addition | The order in which numbers are added does not change the sum of the numbers |
Commutative Property of multiplication | The order in which numbers are multiplied does not change the product of the numbers. |
Substitution | To replace a variable with a number |
Identity Property of multiplication | The product of a number and one is that number |
Associative Property of multiplication | The way numbers are grouped does not affect the product |
Order of operation | A set of rules mathematicians use to determine the order in which operations are preformed |
Distributive property | Multiplying a sum (or difference) by a number gives the same results as multiplying each number in the sum (or difference) by the number and adding (or subtracting) the products |
Identity property of addition | Adding zero to a number does not change the number |
Evaluate | To find the value of an expression |