6th RtI - Evaluating Expressions

6th RtI - Evaluating Expressions

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Multiple Choice

Let's Review. Evaluate the expression:

 $6^2\ -\ 4\ \div2$  

• 16

• 4

• 34

• 10

Multiple Choice

In the order of operations, which comes first?

• Exponents

• Multiplication

• Addition

Order of Operations

When evaluating expressions, you need to always remember to follow the order of operations! You need to use this when solving any type of expression.

Let's Try This Again!

Multiple Choice

Evaluate the expression:

 $6\ \times2^2\ +\ 3$  

• 27

• 147

• 42

• 67

Multiple Choice

Evaluate the expression:

$$\left(8\ -\ 5\right)\ \times\ 12\ +\ 3^2$$  

• 54

• 63

• 42

• 45

Evaluating Expressions with Substitution

For the next questions, you will be evaluating expressions by substituting a given number for a variable.

Fill in the Blank

Evaluate the following expression if a = 7.

$$a\ +6+a$$  

Fill in the Blank

Evaluate the expression when b = 3.

$$b^2\ +\ 4$$  

Multiple Choice

Evaluate the expression when a = 15.

$$2\left(a\ -\ 5\right)\ +\ 2$$  

• 22

• 27

• 14

• 7

Fill in the Blank

Evaluate the expression when x = 2.

10x - 3

Multiple Choice

Evaluate the expression when c = 2.

 $6c^3\ +\ 5$  

• 48

• 41

• 53

• 29

Fill in the Blank

Evaluate the expression when a = 10 and b = 6.

$$3a\ +\ 18\ -\ 6b$$  

Fill in the Blank

Evaluate the expression when b = 5.

$$\frac{24}{b}\ +\ 8$$  

Great job today!

I hope you now understand how to evaluate expressions. Next time we meet we will work on writing expressions from word problems.