commutative property: pumpkins bats to commute means to travel… (like when people commute to...
TRANSCRIPT
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 withdoes 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 somemath properties…
GET YOUR RESPONSE CARDS READY
ASSOCIATIVE? COMMUTATIVE? or IDENTITY?
5 + 0 = 5
IDENTITY
5 + 0 = 5:)
ASSOCIATIVE? COMMUTATIVE? or IDENTITY?
3 + 4 = 4 + 3
COMMUTATIVE
3 + 4 = 4 + 3
ASSOCIATIVE? COMMUTATIVE? or IDENTITY?
9 x 5 = 5 x 9
COMMUTATIVE
9 x 5 = 5 x 9
ASSOCIATIVE? COMMUTATIVE? or IDENTITY?
(5+3)+2 = 5+(3+2)
ASSOCIATIVE
(5+3)+2 = 5+(3+2)
ASSOCIATIVE? COMMUTATIVE? or IDENTITY?
4 x 3 = 3 x 4
COMMUTATIVE
4 x 3 = 3 x 4
ASSOCIATIVE? COMMUTATIVE? or IDENTITY?
(3 x 8) x 6 = 3 x (8 x 6)
ASSOCIATIVE
(3 x 8) x 6 = 3 x (8 x 6)
ASSOCIATIVE? COMMUTATIVE? or IDENTITY?
5 x 4 = 4 x 5
COMMUTATIVE
5 x 4 = 4 x 5
ASSOCIATIVE? COMMUTATIVE? or IDENTITY?
7 x 1 = 7
IDENTITY
7 x 1 = 7. .\____/
Now, let’s try itwith letters…
ASSOCIATIVE? COMMUTATIVE? or IDENTITY?
a + b = b + a
COMMUTATIVE
a + b = b + a
ASSOCIATIVE? COMMUTATIVE? or IDENTITY?
a x 1 = a
IDENTITY
a x 1 = a
ASSOCIATIVE? COMMUTATIVE? or IDENTITY?
a + (b + c) = (a + b) + c
ASSOCIATIVE
a + (b + c) = (a + b) + c
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?
1. 4 + 3 = 3 + 4
2. 8 x 1 = 8
3. (3 + 1) + 7 = 3 + (1 + 7)
Write in box: A C I
NAME ______________________
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