Distributive property: the property that states that multiplying or dividing a sum by a number is the same is the same as multiplying or dividing each addend by the number and then adding the products or quotients
Evaluate: to find the value of an expression
Exponent: a number that tells how many times a base is used as a factor
Inverse operations: opposite operations that undo each other; addition and subtraction are inverse operations; multiplication and division are inverse operations
Numerical expression: a mathematical phrase that has numbers and operation signs but no equal sign
Order of operation: the process for evaluating expressions
Period: each group of three digits separated by commas in a multi-digit number.