5.OA.A.1write and interpret numerical expressions
Students will be able to use parenthesis, brackets, or braces in numerical expressions, and evaluation expressions with these symbols.
A numerical expression is a numerical phrase that contains numbers and operations. In a numerical expression the problem does not have the solution yet. These numerical expressions can have more than one operation, so students need to know the steps (order) they need to go about to solve the expression correctly.
Traditionally, many people have been taught PEMDAS which means you solve items inside parenthesis first, then parts including exponents, then parts with multiplication and division (from left to right) and finally parts with addition and subtraction (from left to right). More recently, teachers have been using the acronym GEMS to emphasize there is more than one grouping style other than parenthesis. Brackets and braces can also be seen in the problem, so student must remember those symbols too.
A numerical expression is a numerical phrase that contains numbers and operations. In a numerical expression the problem does not have the solution yet. These numerical expressions can have more than one operation, so students need to know the steps (order) they need to go about to solve the expression correctly.
Traditionally, many people have been taught PEMDAS which means you solve items inside parenthesis first, then parts including exponents, then parts with multiplication and division (from left to right) and finally parts with addition and subtraction (from left to right). More recently, teachers have been using the acronym GEMS to emphasize there is more than one grouping style other than parenthesis. Brackets and braces can also be seen in the problem, so student must remember those symbols too.


Click on the images below to play games to help you practice following the order of operations.