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COMMUTATIVE PROPERTY: pumpkins bats

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To commute means to travel… (like when people commute to work…or take a commuter train)

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This does NOT work with subtraction (let’s see why)

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This does NOT work with division either (let’s see why)

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ASSOCIATIVE PROPERTY:

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Who you associate with does not matter…. (the whole group is still the same)

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This does NOT work with subtraction (let’s see why)

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This does NOT work with division either (let’s see why)

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IDENTITY PROPERTY:

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The identity of the number stays the same…(just like if you put on a mask for Halloween, your identity stays the same…you are still the same person) SHOW ME YOUR I.D.

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Let’s try to identify some math properties… GET YOUR RESPONSE CARDS READY

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ASSOCIATIVE? COMMUTATIVE? or IDENTITY? 5 + 0 = 5

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IDENTITY :)

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ASSOCIATIVE? COMMUTATIVE? or IDENTITY? 3 + 4 = 4 + 3

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COMMUTATIVE

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ASSOCIATIVE? COMMUTATIVE? or IDENTITY? 9 x 5 = 5 x 9

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COMMUTATIVE

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ASSOCIATIVE? COMMUTATIVE? or IDENTITY? (5+3)+2 = 5+(3+2)

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ASSOCIATIVE

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ASSOCIATIVE? COMMUTATIVE? or IDENTITY? 4 x 3 = 3 x 4

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COMMUTATIVE

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ASSOCIATIVE? COMMUTATIVE? or IDENTITY? (3 x 8) x 6 = 3 x (8 x 6)

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ASSOCIATIVE

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ASSOCIATIVE? COMMUTATIVE? or IDENTITY? 5 x 4 = 4 x 5

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COMMUTATIVE

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ASSOCIATIVE? COMMUTATIVE? or IDENTITY? 7 x 1 = 7

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IDENTITY. \____/

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Now, let’s try it with letters…

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ASSOCIATIVE? COMMUTATIVE? or IDENTITY? a + b = b + a

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COMMUTATIVE

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ASSOCIATIVE? COMMUTATIVE? or IDENTITY? a x 1 = a

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IDENTITY

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ASSOCIATIVE? COMMUTATIVE? or IDENTITY? a + (b + c) = (a + b) + c

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ASSOCIATIVE

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The associative property only works with… a)addition and multiplication b)addition and subtraction c)division and multiplication

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The commutative property only works with… a)addition and subtraction b)division and multiplication c)addition and multiplication

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The identity property only works with… a)addition and subtraction b)addition and multiplication c)division and multiplication

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WHAT IS THE SAME FOR ALL 3 OF THESE PROPERTIES?

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THEY ALL ONLY WORK FOR ADDITION AND MULTIPLICATION.

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END OF SLIDE SHOW

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Exit Slip ASSOCIATIVE? COMMUTATIVE? or IDENTITY? 1. 4 + 3 = 3 + 4 2. 8 x 1 = 8 3. (3 + 1) + 7 = 3 + (1 + 7) Write in box: A C I NAME ______________________

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FLASHBACK: ASSOCIATIVE? COMMUTATIVE? or IDENTITY? 1. 4 + 3 = 3 + 4 2. 8 x 1 = 8 3. 6 + 0 = 6 4. (3 + 1) + 7 = 3 + (1 + 7) 5. a + b = b + a write: A C I

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To identify basic multiplication facts and properties.

To identify basic multiplication facts and properties.

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