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Solve this problem - PowerPoint PPT Presentation

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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PowerPoint Slideshow about 'Solve this problem' - kyle

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Presentation Transcript
• 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 way The wrong way
• 12 ÷ 3 x 2 12 ÷ 3 x 2
• 4 x 2 12 ÷ 6
• 8 2
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
• 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 way The wrong way

Watch me!

5 + 4 + 7 x 3

Watch me!
• 28 ÷ 4 - (4 + 3)
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