Commutative Property
What other expression is equal to 3x4?
4x3
Write an equation to solve using the distributive property.
7x3
Example
(5x3)+(2x3)
Draw an array to show 2x4
- - - -
- - - -
5x2=y
10
1x7
7
Is this sentence true or false?
4x5=5x4
true
Write an equation to solve using the distributive property.
8x5
(4x5)+(4x5)
Draw an array to show 4 rows of 6
x x x x x x
x x x x x x
x x x x x x
x x x x x x
Write a division sentence to math this multiplication sentence. Solve for y.
5x3=y
15 divided by 5=3
or 15 divided by 3=5
123 x 0
0
What is the Commutative Property?
What is the original equation?
(4x3)+(5x3)
9x3
There are 15 legos on the floor. The legos are in rows of 5. Draw an array to show how the legos are on the floor.
xxxxx
xxxxx
xxxxx
What unknown number makes this equation true?
6 X y= 18
3
How many pets does Mrs. McSwain have?
6 (2 cats, 2 dogs, 2 goats)
3x4=12
4x3=12
12 divided 4=3
12 divided 3=4
Is this a true statement?
9x3=(4x3)+(5x3)
true
Mrs. McSwain planted 20 roses in her garden. She has 3 rows of red roses and 2 rows of yellow roses. Draw an array to show Mrs. McSwain's garden
x x x x
x x x x
x x x x
y y y y
y y y y
What unknown number makes this equation true.
27 รท t = 9
3
What is Mrs. McSwain's favorite color?
Turquoise or pink
What is the fact family for 7x3?
7x3=21
3x7=21
21 divided by 3=7
21 divided by 7=3
Find the error.
6x5=(3x3)+(5x5)
= 9+25
= 34
should be (3x5)+(3x5)= 15+15=30
What equation can you write using this array?
x x x x x x
x x x x x x
---------------
x x x x x x
x x x x x x
x x x x x x
5x6=30 or
(2x6)+(3x6)=30
What unknown number makes this equation true?
7x3= (6x3)+( t x 3)
1
Is this an example of the commutative property or distributive property?
6x3= 3x6