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