Compare Expressions

Compare Expressions

Open Ended

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Comparing Expressions

• Lesson Goals

• Compare numerical expressions.

• Compare variable expressions by substituting a value for the variable.

• Determine if a pair of expressions form an equation or an inequality.

Indiana Standards

• 6.AF.2

  Apply the properties of operations (e.g., identity, inverse, commutative, associative, distributive properties) to create equivalent linear expressions and to justify whether two linear expressions are equivalent when the two expressions name the same number regardless of which value is substituted into them.

Indiana Standards

• 6.AF.4

  Understand that solving an equation or inequality is the process of answering the following question: Which values from a specified set, if any, make the equation or inequality true? Use substitution to determine whether a given number in a specified set makes an equation or inequality true.

Equation

• An equation is a number sentence that shows two equal expressions

Inequality

• Inequality means not equal

• An inequality is a mathmatical sentence. It shows two expressions that are not equal.

Compare the Expressions

 $5\ +9\ and\ 53\ -4\cdot3$  
<, >, or =? 
Remember PEMDAS!

Compare Algebraic Expressions

•  $4a+2\ and\ 4a-2\ \ \ \ \ a=4$  

Multiple Choice

Compare the expressions

 $\frac{9\cdot7-3^3}{4\cdot3}\ \ and\ 3\left(2\cdot9-4^2\right)$  

• =

• <

• >

Multiple Select

Compare the expressions

 $2a^2+ab\ and\ \ 3b^2+3a$ 

Choose all options that apply 

• <

• >

• =

•  $\ne$  

Open Ended

How is the order of operations related to comparing expressions?

Open Ended

How is comparing numerical expressions different from comparing algebraic expressions? Why?

Poll

How do you feel about comparing expressions?

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• Were you speaking English?