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3.10 (Parentheses) in Number Sentences

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Homework Review

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Mental Math Find the quotients to make each number sentence true. 12/2 = _____ 10 ÷ 10 = _____ 49/7 = _____ 27 ÷ 3 = ____ 720/9 = ____ 8,100 ÷ 90 = _____

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Math Message Write your defense in your Math Notebook.

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PARENTHESES show which operation to do first. Help me insert the parentheses to make each number sentence true.

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Working through Number Sentences with Parentheses Rewrite each sentence below the original one with the term in the parentheses simplified.

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Let’s try some more… Rewrite each number sentence on your whiteboard. Insert parentheses to make each number sentence true.

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True or False…You Decide

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Math Journal Partnership Work p 71. Part 1 Sample Problem: What operation do you do first? Why? What should you do next? Part 2 Sample Problem: The result is 16 because 16 is the product of 2 and 8. 8 is the difference of 15 and 7. What was done first? What was done second? Where do we insert parentheses?

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Part 3 Sample Problem: Use all three numbers and parentheses to get the target number.

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Tonight’s Homework

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Math Boxes

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Math Bellwork Sept. 9 – Sept. 13. Bellwork 9/9/13 Simplify. Write as a fraction. 1. 2 -6 2. (-3) -4 3. 3 -3 4. (-2) -5.

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