COMMUTATIVE PROPERTY: pumpkins bats

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

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

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

ASSOCIATIVE PROPERTY:

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

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

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

IDENTITY PROPERTY:

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.

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

ASSOCIATIVE? COMMUTATIVE? or IDENTITY? = 5

IDENTITY :)

ASSOCIATIVE? COMMUTATIVE? or IDENTITY? = 4 + 3

COMMUTATIVE

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

COMMUTATIVE

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

ASSOCIATIVE

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

COMMUTATIVE

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

ASSOCIATIVE

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

COMMUTATIVE

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

IDENTITY. \____/

Now, let’s try it with letters…

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

COMMUTATIVE

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

IDENTITY

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

ASSOCIATIVE

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

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

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

WHAT IS THE SAME FOR ALL 3 OF THESE PROPERTIES?

THEY ALL ONLY WORK FOR ADDITION AND MULTIPLICATION.

END OF SLIDE SHOW

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

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