# Solve this problem - PowerPoint PPT Presentation

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Anticipatory set. Solve this problem. 2 + 5 x 3. Are there two right answers?. There is only one right answer because of the correct order of operations. The right answer is 17. Order of Operation. I can use order of operations to simplify numerical expressions. Essential Questions.

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Solve this problem

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Anticipatory set

• 2 + 5 x 3

### Are there two right answers?

• There is only one right answer because of the correct order of operations.

• The right answer is 17.

### Order of Operation

• I can use order of operations to simplify numerical expressions.

### Essential Questions

• What is the correct order of operations?

• Why is it important to apply the correct order of operations when solving numerical expressions?

### PEMDASD

• P Do all parentheses first

• E Apply any exponents

• MD Do all multiplication and division, working from left to right

• AS Do all addition and subtraction, working from left to right

• D or F Division Bar or Fraction Bar (Simplify Fractions)

### Be Careful

• be careful to work Multiplication and division from left to right.

• The right wayThe wrong way

• 12 ÷ 3 x 212 ÷ 3 x 2

• 4 x 212 ÷ 6

• 82

• ### Watch me!

• 5 + 4 + 7 x 3

• 5 + 4 + 21

• 9 + 21

30

### Watch me!

• 28 ÷ 4 - (4 + 3)

• 28 ÷ 4 – 7

• 7 - 7

0

### Let’s do some together

• 22 + 16 - 8

• 4 + 16 - 8

• 20 - 8

• 12

### Let’s do some together

• (6 + 4)2 x 8

• ( 10 )2 x 8

• 100 x 8

• 800

### Try it

• 6 + 7 x 8 =

• 16 ÷ 8 - 2 =

• (25 - 11) x 3 =

• 9 x 4 - 6 ÷ 3 =

• 16 ÷ 4 x 2 =

• 2 x 9 ÷ 3 =

• 9 + 6 x (8 - 5) =

Bonus: 2 x (5 + 4) ÷ 32 - 1

### Closure

• Close your notes

• Think about the correct order or operations

• Write the correct order on your slate

### Order of Operation

• I can use order of operations to simplify numerical expressions.

### Essential Questions

• What is the correct order of operations?

• Why is it important to apply the correct order of operations when solving numerical expressions?

### PEMDAS

• P Do all parentheses first

• E Apply any exponents

• MD Do all multiplication and division, working from left to right

• AS Do all addition and subtraction, working from left to right

• D Division Bar or Fraction Bar (Simplify Fractions)

### Be Careful

Be careful to work Multiplication and division from left to right.

The right wayThe wrong way

### Watch me!

5 + 4 + 7 x 3

### Watch me!

• 28 ÷ 4 - (4 + 3)

### Let’s do some together

• 22 + 16 - 8

(6 + 4)2 x 8

### Try it

• 6 + 7 x 8 =

• 16 ÷ 8 - 2 =

• (25 - 11) x 3 =

• 9 x 4 - 6 ÷ 3 =

• 16 ÷ 4 x 2 =

• 2 x 9 ÷ 3 =

• 9 + 6 x (8 - 5) =

Bonus: 2 x (5 + 4) ÷ 32 - 1