L19 Review & Practice Evaluate Expressions

Evaluate and Write Expressions

Objective

• Evaluate expressions containing parentheses

• write numerical expressions containing parentheses

• interpret numerical expressions without evaluating them 

Vocabulary

• Evaluate: to find the value of an expression

• Parentheses ( ): A grouping symbol; they represent a part of the problem that should be done before others

Fill in the Blanks

Write an expression for the cost of a drink and popcorn for one person

Multiple Choice

What operation do you use to find the cost of a drink and a popcorn for one person?

• multiplication

• division

• addition

• subtraction

Fill in the Blanks

Write an expression for the cost of a drink and popcorn for one person

Multiple Choice

How much would it cost for 2 people compared to the cost of one?

• It would be the same

• it would be twice as much

Open Ended

How would you find the cost for two people?

Multiple Choice

How much does it cost for Maria to buy a popcorn and a drink for two people?

• $13

• $5

• $8

• $26

Multiple Choice

What are parentheses?

• they tell you how many times to multiply the base by itself

• grouping symbols which should be solved 1st in an expression

Multiple Choice

Evaluate 0.50 x (24+8) to find the cost of the erasers.

• 16

• 20

• 32

• 5/6

Multiple Choice

Sara buys a shirt that costs $12 and a pair of pants that regularly costs $26. They are on sale, so she only need to pay half of the regular cost. Evaluate the expression

$$\frac{1}{2}\times\left(12+26\right)$$  to find Sara's cost in dollars. 

• $$\frac{38}{1}$$  

• $$\frac{7}{8}$$  

• 32

• 19

Multiple Choice

Which expression best represents "15 minus the sum of 6 and 7"

• 15 - 6 + 7

• 15 - (6+7)

• (6+7) -15

• 6-7+15

Multiple Choice

Ella babysits 3 hours each day for 4 days. On the fifth day, she babysits for 6 hours . Which expression represents how many hours Ella babysits altogether?

• 4 + 3 + 6

• 4 x (3 + 6)

• 3 x (4 + 6)

• 3 x 4 + 6

Multiple Select

• A

• B

• C

• D