Of Multiplication By Ms Nunez Standards 3OA5 SWBAT identify distributive property SWBAT define distributive property SWBAT solve distributive property problems What is the Distributive Property ID: 627873
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Slide1
The Distributive Property
Of Multiplication
By: Ms. NunezSlide2
Standards3.OA.5SWBAT identify distributive property.
SWBAT define distributive property.
SWBAT solve distributive property problems.Slide3
What is the Distributive Property?
It’s when multiplying a number is the same as multiplying its addends by the number and then adding up the products!
For example: 6(4+5) is the same as 6x4 + 6x5 it all equals 54.Slide4
Let me show you!But wait, Ms.! When will I ever need to use this? What does distributive mean? First answer: Say you don’t know 6 x 9 off the top of your head. You can break down 9 and distribute to find the answer.
Second answer: Think about it. What does DISTRIBUTIVE mean? What do you do when you DISTRIBUTE something?
Hint: “Ms. Nunez distributes the worksheets to the class.”Slide5
Define DistributiveGreat! When you distribute something, you hand it out. So the 6 in 6 (4 + 5) is being DISTRIBUTED
to both the 4 and the 5, then all you do is add!
Show your work!
6 (4 + 5)
6x4 + 6x5 24 + 30 =
54
!Slide6
Breakin’ It DownSo, as I said, you can use the Distributive Property to break down multiplication facts you may not remember off the top of your head.
For example: I forgot what 8 x 8 was, but I know I can break down one of these numbers.
So, I can make 8(5 + 3) and distribute the 8 to both 5 and 3.
I can do this because…what does 5 +3 equal? 8!Slide7
Step it out!Step 1: Identify the number that you will be DISTRIBUTING
.
Step 2:
DISTRIBUTE
the number to both factors in the parenthesis.
Step 3: Solve for both problems.
Step 4: Add them together.Slide8
Let’s try together.Example: 5(3 + 2)
What happens first?
Right, so 5 is the number I’m distributing. What two numbers am I distributing it to?
Yes! The 3 and the 2, it should look like this:
5x3 + 5x2
Now what?
Multiply & then Add!
5x3= 15, 5x2 = 10
15 + 10 = 25
So, 5(3 + 2) = 25Slide9
You try!7(2 + 8)
4(3 + 6)
2(1 + 4)
6(5 + 2)
9(7 + 1)