1 / 21

# Warm UP - PowerPoint PPT Presentation

Warm UP. Write a verbal expression for, “4n 2 – 2(n+3)”. August 27, 2009. 1-2 Order of Operations. Objective: Evaluate numerical expressions by using the order of operations. Solve: 6 + 3 x 8 – 5. Problem: Ms. Falvo needs lunch Solution: Make a PPJ!.

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

## PowerPoint Slideshow about 'Warm UP' - uriah

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

### Warm UP

Write a verbal expression for,

“4n2 – 2(n+3)”

### 1-2 Order of Operations

Objective: Evaluate numerical expressions by using the order of operations.

Solve: 6 + 3 x 8 – 5

Problem: Ms. Falvo needs lunchSolution: Make a PPJ!

• Baking a cake

• Taking a shower

• Cooking

• Making kool aid

### PEMDAS

P lease

E xcuse

M y

D ear

A unt

S ally

Order of Operations1. Evaluate expressions inside grouping symbols. ( ) { } [ ]2. Evaluate all powers.3. Do all multiplications and/or divisions from LEFT to RIGHT.4. Do all additions and/or subtractions from LEFT to RIGHT.

Grouping symbols such as parentheses ( ), brackets [ ], and braces { } are used to clarify or change the order of operations.

Examples: Simplify braces { } are used to clarify or change the order of operations.

1. 4 + 32

2. 4 + (5 + 1)2

3. 4 + [–1(–2 – 2)] braces { } are used to clarify or change the order of operations.2

4. 4( –2/3 + 4/3 )

5. 4 – 3[4 –2(6 – 3)] ÷ 2 braces { } are used to clarify or change the order of operations.

6. 16 – 3(8 – 3)2 ÷ 5

A fraction bar is another type of grouping symbol. Perform all calculations above and below the fraction bar before dividing the numerator by the denominator.

Examples: Simplify all calculations above and below the fraction bar before dividing the numerator by the denominator.

1.

2. all calculations above and below the fraction bar before dividing the numerator by the denominator.

3.

Algebraic expressions can be evaluated when the values of the variables are known 1. Replace the variables with their values. 2. Find the value of the expression using the order of operations.

Examples: Simplify the variables are known

1. 2x + 4y if x = 3 and y = 10

2. – {2 the variables are knownx – [3 – (4 – 3x)] + 6x} if x = 2

3. 14a + 5b[6 – (2c + 3)] if a = 1, b = 4, c = 3

Get with a partner! the variables are known

It’s your turn to create a mnemonic for the Order of Operations!! PEMDAS! 

Workbook – p. 4 down 1 the variables are knownst column

Fill in the blanks with the correct symbol to make each equation true. Use +, -, x, / and parentheses.

• 4 ___ 4 ___ 4 ___ 4 = 1

• 4 ___ 4 ___ 4 ___ 4 = 2

• 4 ___ 4 ___ 4 ___ 4 = 3

• 4 ___ 4 ___ 4 ___ 4 = 4

Homework – equation true. Use +, -, x, / and parentheses.

pg. 13: 22-28 even, 29-34