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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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Presentation Transcript
are there two right answers
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
Order of Operation
  • I can use order of operations to simplify numerical expressions.
essential questions
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
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
  • 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
Watch me!
  • 5 + 4 + 7 x 3
  • 5 + 4 + 21
  • 9 + 21

30

watch me1
Watch me!
  • 28 ÷ 4 - (4 + 3)
  • 28 ÷ 4 – 7
  • 7 - 7

0

let s do some together
Let’s do some together
  • 22 + 16 - 8
  • 4 + 16 - 8
  • 20 - 8
  • 12
let s do some together1
Let’s do some together
  • (6 + 4)2 x 8
  • ( 10 )2 x 8
  • 100 x 8
  • 800
try it
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
Closure
  • Close your notes
  • Think about the correct order or operations
  • Write the correct order on your slate
order of operation1
Order of Operation
  • I can use order of operations to simplify numerical expressions.
essential questions1
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
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 careful1
Be Careful

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

The right way The wrong way

watch me2
Watch me!

5 + 4 + 7 x 3

watch me3
Watch me!
  • 28 ÷ 4 - (4 + 3)
try it1
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

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