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# Unit 4 Vocab for CV

### Unit 4 Vocabulary for EveryDay Math

TermDefinition
Expression A grouping of math symbols that may include numbers, variables, operation symbols, and grouping symbols
simplify an expression to rewrite an expression by combining like terms and constants.
base the number that is raised to a power.
exponent a number used in exponential notation to tell how many times the base is used as a factor.
variable A LETTER or other symbol that can be replaced by any number
algebraic expression An expression that contains a VARIABLE.
substitute To replace one thing with another-like replacing variables with numbers
coefficient The number, or CONSTANT factor, in a variable term.
equation A number sentence that contains an EQUAL sign.
open sentence A number sentence with a variable that is either true or false depending on what value is substituted for the variable.
mean absolute deviation In a data set, the average of distances individual data points are from the average of the whole data set.
Distributive Property A property that relates multiplication and addition or subtraction. this property gets its name because it “distributes” a factor over terms inside parentheses.
Associative Property A property of multiplication (but not division) that says that when you multiply three numbers, you can change the grouping without changing the product.
Commutative Property A property of addition ( but not subtraction) that says that changing the order of the numbers being added does not change the sum.
inequality A number sentence with > < ≥ ≤ or ≠
relation symbol A symbol such as < , > , and = used to express a relationship between two quantities
solution set The set of all ANSWERS for an equation or inequality
magnitude of a number The size of a number: the number’s distance from 0.
absolute value The distance between a number and 0 on the number line.
Created by: staufferh