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Chapter 6-5th Grade

Variables and Expressions

variable A letter, such as n, that represents a number in an expression or an equation.
algebraic expression A mathematical phrase involving a variable or variables, numbers, and operations.
Distributive Property Multiplying a sum (or difference) by a number is the same as multiplying each number in the sum (or difference) by that number and adding the products.
order of operations The order in which operations are done in calculations. Work inside parentheses is done fi rst. Then multiplication and division are done in order from left to right, and fi nally addition and subtraction are done in order from left to right.
Created by: rhondacarlton