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Solve this problem

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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Presentation Transcript

  1. Anticipatory set Solve this problem • 2 + 5 x 3

  2. Are there two right answers? • There is only one right answer because of the correct order of operations. • The right answer is 17.

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

  4. Essential Questions • What is the correct order of operations? • Why is it important to apply the correct order of operations when solving numerical expressions?

  5. 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)

  6. 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

  7. Watch me! • 5 + 4 + 7 x 3 • 5 + 4 + 21 • 9 + 21 30

  8. Watch me! • 28 ÷ 4 - (4 + 3) • 28 ÷ 4 – 7 • 7 - 7 0

  9. Let’s do some together • 22 + 16 - 8 • 4 + 16 - 8 • 20 - 8 • 12

  10. Let’s do some together • (6 + 4)2 x 8 • ( 10 )2 x 8 • 100 x 8 • 800

  11. 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

  12. Closure • Close your notes • Think about the correct order or operations • Write the correct order on your slate

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

  14. Essential Questions • What is the correct order of operations? • Why is it important to apply the correct order of operations when solving numerical expressions?

  15. 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)

  16. Be Careful Be careful to work Multiplication and division from left to right. The right way The wrong way

  17. Watch me! 5 + 4 + 7 x 3

  18. Watch me! • 28 ÷ 4 - (4 + 3)

  19. Let’s do some together • 22 + 16 - 8

  20. Let’s do some together (6 + 4)2 x 8

  21. 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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