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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**• 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**• 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 way The wrong way**Watch me!**5 + 4 + 7 x 3**Watch me!**• 28 ÷ 4 - (4 + 3)**Let’s do some together**• 22 + 16 - 8**Let’s do some together**(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