MA STANDARDS Use parentheses, brackets, or braces in numerical expressions,
and evaluate expressions with these symbols. (e.g. (6 x 30) + (6
x 1/2)) 
Once students' fact knowledge is strong, students area able to easily apply the standards related to numerical expression. Early introduction of these standards at the start of the year enables students to use these principles throughout the year as they deepen their math knowledge and learning.
Question Types
Student Unit Goal and Objective:
I will review and learn to write/create, estimate/interpret, evaluate/calculate, compare/contrast inequalities, expressions, and equations with mastery.
Grade 5  CCSS.Math.Content.5.OA.A.1 Use parentheses, brackets, or braces in numerical expressions, and evaluate expressions with these symbols.  CCSS.Math.Content.5.OA.A.2 Write simple expressions that record calculations with numbers, and interpret numerical expressions without evaluating them. For example, express the calculation “add 8 and 7, then multiply by 2” as 2 × (8 + 7). Recognize that 3 × (18932 + 921) is three times as large as 18932 + 921, without having to calculate the indicated sum or product. 
Assess Your Knowledge: Evaluate The Expression Below. What is the value?
Evaluate: Calculate to Find the Value
What is the order of operations? How can you remember the order of operations?
Watch this video and find out. Notes for PEMDAS  Remember "parentheses" in PEMDAS stands for all brackets (see image below).
You may use brackets when writing order of operations. There are multiple types of brackets with parentheses the most common type of bracket used in mathematical expressions, inequalities, and equations.
CCSS.Math.Content.5.OA.A.1 Use parentheses, brackets, or braces in numerical expressions, and evaluate expressions with these symbols. 
Parentheses: ( ) “round brackets” #1 first level
Also called bracket. either of a pair of characters, (), used to enclose a mathematical expression.
Example:
5 X (6 + 2) = 40
remember to solve the expression inside the parentheses first.  Brackets: [ ] “box or square brackets” #2 second level
Parentheses of various forms indicating that the enclosed quantity is to be treated as a unit.
Example:
6 X [5 X (6 + 2)] = 240
parentheses first, then brackets, then the rest following the order of operations.  Braces: { } “curly brackets” #3 third level
one of two marks { } used to connect words or items to be considered together
Example:
2 X {6 X [5 X (6+2)]} = 480 

Making Fraction Models Helps You to Write, Interpret, and Evaluate Fraction Expressions, Inequalities, and Equations.
Decomposing Five into Fraction EquationsDecomposing Five into Fraction Equations
Practice Your Skill, Concept, and Knowledge Related to Numerical Expression with the Exercises Below
Practice with Brackets, Parentheses, and Braces
More PEMDAS Practice
Exploring Numerical ExpressionExploring Numerical Expression 
